[REF] web: change bootstrap source from less to scss

Note: bootstrap 3.3.7 in SCSS produces slightly different CSS
of bootstrap 3.3.7 in LESS... the DOM result should be the same
though.

102 files changed, 3354 insertions, 3305 deletions

diff --git a/addons/web/static/lib/bootstrap/LICENSE b/addons/web/static/lib/bootstrap/LICENSE
index 7a300022c3e..a3827b59600 100644
--- a/addons/web/static/lib/bootstrap/LICENSE
+++ b/addons/web/static/lib/bootstrap/LICENSE
@@ -1,6 +1,7 @@
 The MIT License (MIT)
 
-Copyright (c) 2011-2016 Twitter, Inc.
+Copyright (c) 2011-2016 Twitter, Inc
+Copyright (c) 2011-2016 The Bootstrap Authors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/addons/web/static/lib/bootstrap/less/bootstrap.less b/addons/web/static/lib/bootstrap/less/bootstrap.less
deleted file mode 100644
index f0aa08f3a6e..00000000000
--- a/addons/web/static/lib/bootstrap/less/bootstrap.less
+++ /dev/null
@@ -1,56 +0,0 @@
-/*!
- * Bootstrap v3.3.7 (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-// Core variables and mixins
-@import "variables.less";
-@import "mixins.less";
-
-// Reset and dependencies
-@import "normalize.less";
-@import "print.less";
-@import "glyphicons.less";
-
-// Core CSS
-@import "scaffolding.less";
-@import "type.less";
-@import "code.less";
-@import "grid.less";
-@import "tables.less";
-@import "forms.less";
-@import "buttons.less";
-
-// Components
-@import "component-animations.less";
-@import "dropdowns.less";
-@import "button-groups.less";
-@import "input-groups.less";
-@import "navs.less";
-@import "navbar.less";
-@import "breadcrumbs.less";
-@import "pagination.less";
-@import "pager.less";
-@import "labels.less";
-@import "badges.less";
-@import "jumbotron.less";
-@import "thumbnails.less";
-@import "alerts.less";
-@import "progress-bars.less";
-@import "media.less";
-@import "list-group.less";
-@import "panels.less";
-@import "responsive-embed.less";
-@import "wells.less";
-@import "close.less";
-
-// Components w/ JavaScript
-@import "modals.less";
-@import "tooltip.less";
-@import "popovers.less";
-@import "carousel.less";
-
-// Utility classes
-@import "utilities.less";
-@import "responsive-utilities.less";
diff --git a/addons/web/static/lib/bootstrap/less/breadcrumbs.less b/addons/web/static/lib/bootstrap/less/breadcrumbs.less
deleted file mode 100644
index cb01d503fbe..00000000000
--- a/addons/web/static/lib/bootstrap/less/breadcrumbs.less
+++ /dev/null
@@ -1,26 +0,0 @@
-//
-// Breadcrumbs
-// --------------------------------------------------
-
-
-.breadcrumb {
-  padding: @breadcrumb-padding-vertical @breadcrumb-padding-horizontal;
-  margin-bottom: @line-height-computed;
-  list-style: none;
-  background-color: @breadcrumb-bg;
-  border-radius: @border-radius-base;
-
-  > li {
-    display: inline-block;
-
-    + li:before {
-      content: "@{breadcrumb-separator}\00a0"; // Unicode space added since inline-block means non-collapsing white-space
-      padding: 0 5px;
-      color: @breadcrumb-color;
-    }
-  }
-
-  > .active {
-    color: @breadcrumb-active-color;
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/close.less b/addons/web/static/lib/bootstrap/less/close.less
deleted file mode 100644
index 6d5bfe087ae..00000000000
--- a/addons/web/static/lib/bootstrap/less/close.less
+++ /dev/null
@@ -1,34 +0,0 @@
-//
-// Close icons
-// --------------------------------------------------
-
-
-.close {
-  float: right;
-  font-size: (@font-size-base * 1.5);
-  font-weight: @close-font-weight;
-  line-height: 1;
-  color: @close-color;
-  text-shadow: @close-text-shadow;
-  .opacity(.2);
-
-  &:hover,
-  &:focus {
-    color: @close-color;
-    text-decoration: none;
-    cursor: pointer;
-    .opacity(.5);
-  }
-
-  // Additional properties for button version
-  // iOS requires the button element instead of an anchor tag.
-  // If you want the anchor version, it requires `href="#"`.
-  // See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
-  button& {
-    padding: 0;
-    cursor: pointer;
-    background: transparent;
-    border: 0;
-    -webkit-appearance: none;
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/jumbotron.less b/addons/web/static/lib/bootstrap/less/jumbotron.less
deleted file mode 100644
index 1d9b515b386..00000000000
--- a/addons/web/static/lib/bootstrap/less/jumbotron.less
+++ /dev/null
@@ -1,54 +0,0 @@
-//
-// Jumbotron
-// --------------------------------------------------
-
-
-.jumbotron {
-  padding-top:    @jumbotron-padding;
-  padding-bottom: @jumbotron-padding;
-  margin-bottom: @jumbotron-padding;
-  color: @jumbotron-color;
-  background-color: @jumbotron-bg;
-
-  h1,
-  .h1 {
-    color: @jumbotron-heading-color;
-  }
-
-  p {
-    margin-bottom: (@jumbotron-padding / 2);
-    font-size: @jumbotron-font-size;
-    font-weight: 200;
-  }
-
-  > hr {
-    border-top-color: darken(@jumbotron-bg, 10%);
-  }
-
-  .container &,
-  .container-fluid & {
-    border-radius: @border-radius-large; // Only round corners at higher resolutions if contained in a container
-    padding-left:  (@grid-gutter-width / 2);
-    padding-right: (@grid-gutter-width / 2);
-  }
-
-  .container {
-    max-width: 100%;
-  }
-
-  @media screen and (min-width: @screen-sm-min) {
-    padding-top:    (@jumbotron-padding * 1.6);
-    padding-bottom: (@jumbotron-padding * 1.6);
-
-    .container &,
-    .container-fluid & {
-      padding-left:  (@jumbotron-padding * 2);
-      padding-right: (@jumbotron-padding * 2);
-    }
-
-    h1,
-    .h1 {
-      font-size: @jumbotron-heading-font-size;
-    }
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins.less b/addons/web/static/lib/bootstrap/less/mixins.less
deleted file mode 100644
index e6f9fe684b7..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins.less
+++ /dev/null
@@ -1,40 +0,0 @@
-// Mixins
-// --------------------------------------------------
-
-// Utilities
-@import "mixins/hide-text.less";
-@import "mixins/opacity.less";
-@import "mixins/image.less";
-@import "mixins/labels.less";
-@import "mixins/reset-filter.less";
-@import "mixins/resize.less";
-@import "mixins/responsive-visibility.less";
-@import "mixins/size.less";
-@import "mixins/tab-focus.less";
-@import "mixins/reset-text.less";
-@import "mixins/text-emphasis.less";
-@import "mixins/text-overflow.less";
-@import "mixins/vendor-prefixes.less";
-
-// Components
-@import "mixins/alerts.less";
-@import "mixins/buttons.less";
-@import "mixins/panels.less";
-@import "mixins/pagination.less";
-@import "mixins/list-group.less";
-@import "mixins/nav-divider.less";
-@import "mixins/forms.less";
-@import "mixins/progress-bar.less";
-@import "mixins/table-row.less";
-
-// Skins
-@import "mixins/background-variant.less";
-@import "mixins/border-radius.less";
-@import "mixins/gradients.less";
-
-// Layout
-@import "mixins/clearfix.less";
-@import "mixins/center-block.less";
-@import "mixins/nav-vertical-align.less";
-@import "mixins/grid-framework.less";
-@import "mixins/grid.less";
diff --git a/addons/web/static/lib/bootstrap/less/mixins/alerts.less b/addons/web/static/lib/bootstrap/less/mixins/alerts.less
deleted file mode 100644
index 396196f438f..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/alerts.less
+++ /dev/null
@@ -1,14 +0,0 @@
-// Alerts
-
-.alert-variant(@background; @border; @text-color) {
-  background-color: @background;
-  border-color: @border;
-  color: @text-color;
-
-  hr {
-    border-top-color: darken(@border, 5%);
-  }
-  .alert-link {
-    color: darken(@text-color, 10%);
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/background-variant.less b/addons/web/static/lib/bootstrap/less/mixins/background-variant.less
deleted file mode 100644
index a85c22b7453..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/background-variant.less
+++ /dev/null
@@ -1,9 +0,0 @@
-// Contextual backgrounds
-
-.bg-variant(@color) {
-  background-color: @color;
-  a&:hover,
-  a&:focus {
-    background-color: darken(@color, 10%);
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/border-radius.less b/addons/web/static/lib/bootstrap/less/mixins/border-radius.less
deleted file mode 100644
index ca05dbf4570..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/border-radius.less
+++ /dev/null
@@ -1,18 +0,0 @@
-// Single side border-radius
-
-.border-top-radius(@radius) {
-  border-top-right-radius: @radius;
-   border-top-left-radius: @radius;
-}
-.border-right-radius(@radius) {
-  border-bottom-right-radius: @radius;
-     border-top-right-radius: @radius;
-}
-.border-bottom-radius(@radius) {
-  border-bottom-right-radius: @radius;
-   border-bottom-left-radius: @radius;
-}
-.border-left-radius(@radius) {
-  border-bottom-left-radius: @radius;
-     border-top-left-radius: @radius;
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/buttons.less b/addons/web/static/lib/bootstrap/less/mixins/buttons.less
deleted file mode 100644
index b294d8c210e..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/buttons.less
+++ /dev/null
@@ -1,65 +0,0 @@
-// Button variants
-//
-// Easily pump out default styles, as well as :hover, :focus, :active,
-// and disabled options for all buttons
-
-.button-variant(@color; @background; @border) {
-  color: @color;
-  background-color: @background;
-  border-color: @border;
-
-  &:focus,
-  &.focus {
-    color: @color;
-    background-color: darken(@background, 10%);
-        border-color: darken(@border, 25%);
-  }
-  &:hover {
-    color: @color;
-    background-color: darken(@background, 10%);
-        border-color: darken(@border, 12%);
-  }
-  &:active,
-  &.active,
-  .open > .dropdown-toggle& {
-    color: @color;
-    background-color: darken(@background, 10%);
-        border-color: darken(@border, 12%);
-
-    &:hover,
-    &:focus,
-    &.focus {
-      color: @color;
-      background-color: darken(@background, 17%);
-          border-color: darken(@border, 25%);
-    }
-  }
-  &:active,
-  &.active,
-  .open > .dropdown-toggle& {
-    background-image: none;
-  }
-  &.disabled,
-  &[disabled],
-  fieldset[disabled] & {
-    &:hover,
-    &:focus,
-    &.focus {
-      background-color: @background;
-          border-color: @border;
-    }
-  }
-
-  .badge {
-    color: @background;
-    background-color: @color;
-  }
-}
-
-// Button sizes
-.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
-  padding: @padding-vertical @padding-horizontal;
-  font-size: @font-size;
-  line-height: @line-height;
-  border-radius: @border-radius;
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/gradients.less b/addons/web/static/lib/bootstrap/less/mixins/gradients.less
deleted file mode 100644
index 0b88a89cc56..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/gradients.less
+++ /dev/null
@@ -1,59 +0,0 @@
-// Gradients
-
-#gradient {
-
-  // Horizontal gradient, from left to right
-  //
-  // Creates two color stops, start and end, by specifying a color and position for each color stop.
-  // Color stops are not available in IE9 and below.
-  .horizontal(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
-    background-image: -webkit-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // Safari 5.1-6, Chrome 10+
-    background-image: -o-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // Opera 12
-    background-image: linear-gradient(to right, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
-    background-repeat: repeat-x;
-    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down
-  }
-
-  // Vertical gradient, from top to bottom
-  //
-  // Creates two color stops, start and end, by specifying a color and position for each color stop.
-  // Color stops are not available in IE9 and below.
-  .vertical(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
-    background-image: -webkit-linear-gradient(top, @start-color @start-percent, @end-color @end-percent);  // Safari 5.1-6, Chrome 10+
-    background-image: -o-linear-gradient(top, @start-color @start-percent, @end-color @end-percent);  // Opera 12
-    background-image: linear-gradient(to bottom, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
-    background-repeat: repeat-x;
-    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down
-  }
-
-  .directional(@start-color: #555; @end-color: #333; @deg: 45deg) {
-    background-repeat: repeat-x;
-    background-image: -webkit-linear-gradient(@deg, @start-color, @end-color); // Safari 5.1-6, Chrome 10+
-    background-image: -o-linear-gradient(@deg, @start-color, @end-color); // Opera 12
-    background-image: linear-gradient(@deg, @start-color, @end-color); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
-  }
-  .horizontal-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
-    background-image: -webkit-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
-    background-image: -o-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
-    background-image: linear-gradient(to right, @start-color, @mid-color @color-stop, @end-color);
-    background-repeat: no-repeat;
-    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
-  }
-  .vertical-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
-    background-image: -webkit-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
-    background-image: -o-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
-    background-image: linear-gradient(@start-color, @mid-color @color-stop, @end-color);
-    background-repeat: no-repeat;
-    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
-  }
-  .radial(@inner-color: #555; @outer-color: #333) {
-    background-image: -webkit-radial-gradient(circle, @inner-color, @outer-color);
-    background-image: radial-gradient(circle, @inner-color, @outer-color);
-    background-repeat: no-repeat;
-  }
-  .striped(@color: rgba(255,255,255,.15); @angle: 45deg) {
-    background-image: -webkit-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
-    background-image: -o-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
-    background-image: linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/grid-framework.less b/addons/web/static/lib/bootstrap/less/mixins/grid-framework.less
deleted file mode 100644
index 8c23eed24e6..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/grid-framework.less
+++ /dev/null
@@ -1,91 +0,0 @@
-// Framework grid generation
-//
-// Used only by Bootstrap to generate the correct number of grid classes given
-// any value of `@grid-columns`.
-
-.make-grid-columns() {
-  // Common styles for all sizes of grid columns, widths 1-12
-  .col(@index) { // initial
-    @item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
-    .col((@index + 1), @item);
-  }
-  .col(@index, @list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
-    @item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
-    .col((@index + 1), ~"@{list}, @{item}");
-  }
-  .col(@index, @list) when (@index > @grid-columns) { // terminal
-    @{list} {
-      position: relative;
-      // Prevent columns from collapsing when empty
-      min-height: 1px;
-      // Inner gutter via padding
-      padding-left:  ceil((@grid-gutter-width / 2));
-      padding-right: floor((@grid-gutter-width / 2));
-    }
-  }
-  .col(1); // kickstart it
-}
-
-.float-grid-columns(@class) {
-  .col(@index) { // initial
-    @item: ~".col-@{class}-@{index}";
-    .col((@index + 1), @item);
-  }
-  .col(@index, @list) when (@index =< @grid-columns) { // general
-    @item: ~".col-@{class}-@{index}";
-    .col((@index + 1), ~"@{list}, @{item}");
-  }
-  .col(@index, @list) when (@index > @grid-columns) { // terminal
-    @{list} {
-      float: left;
-    }
-  }
-  .col(1); // kickstart it
-}
-
-.calc-grid-column(@index, @class, @type) when (@type = width) and (@index > 0) {
-  .col-@{class}-@{index} {
-    width: percentage((@index / @grid-columns));
-  }
-}
-.calc-grid-column(@index, @class, @type) when (@type = push) and (@index > 0) {
-  .col-@{class}-push-@{index} {
-    left: percentage((@index / @grid-columns));
-  }
-}
-.calc-grid-column(@index, @class, @type) when (@type = push) and (@index = 0) {
-  .col-@{class}-push-0 {
-    left: auto;
-  }
-}
-.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index > 0) {
-  .col-@{class}-pull-@{index} {
-    right: percentage((@index / @grid-columns));
-  }
-}
-.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index = 0) {
-  .col-@{class}-pull-0 {
-    right: auto;
-  }
-}
-.calc-grid-column(@index, @class, @type) when (@type = offset) {
-  .col-@{class}-offset-@{index} {
-    margin-left: percentage((@index / @grid-columns));
-  }
-}
-
-// Basic looping in LESS
-.loop-grid-columns(@index, @class, @type) when (@index >= 0) {
-  .calc-grid-column(@index, @class, @type);
-  // next iteration
-  .loop-grid-columns((@index - 1), @class, @type);
-}
-
-// Create grid for specific class
-.make-grid(@class) {
-  .float-grid-columns(@class);
-  .loop-grid-columns(@grid-columns, @class, width);
-  .loop-grid-columns(@grid-columns, @class, pull);
-  .loop-grid-columns(@grid-columns, @class, push);
-  .loop-grid-columns(@grid-columns, @class, offset);
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/grid.less b/addons/web/static/lib/bootstrap/less/mixins/grid.less
deleted file mode 100644
index df496d0b3c1..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/grid.less
+++ /dev/null
@@ -1,122 +0,0 @@
-// Grid system
-//
-// Generate semantic grid columns with these mixins.
-
-// Centered container element
-.container-fixed(@gutter: @grid-gutter-width) {
-  margin-right: auto;
-  margin-left: auto;
-  padding-left:  floor((@gutter / 2));
-  padding-right: ceil((@gutter / 2));
-  &:extend(.clearfix all);
-}
-
-// Creates a wrapper for a series of columns
-.make-row(@gutter: @grid-gutter-width) {
-  margin-left:  ceil((@gutter / -2));
-  margin-right: floor((@gutter / -2));
-  &:extend(.clearfix all);
-}
-
-// Generate the extra small columns
-.make-xs-column(@columns; @gutter: @grid-gutter-width) {
-  position: relative;
-  float: left;
-  width: percentage((@columns / @grid-columns));
-  min-height: 1px;
-  padding-left:  (@gutter / 2);
-  padding-right: (@gutter / 2);
-}
-.make-xs-column-offset(@columns) {
-  margin-left: percentage((@columns / @grid-columns));
-}
-.make-xs-column-push(@columns) {
-  left: percentage((@columns / @grid-columns));
-}
-.make-xs-column-pull(@columns) {
-  right: percentage((@columns / @grid-columns));
-}
-
-// Generate the small columns
-.make-sm-column(@columns; @gutter: @grid-gutter-width) {
-  position: relative;
-  min-height: 1px;
-  padding-left:  (@gutter / 2);
-  padding-right: (@gutter / 2);
-
-  @media (min-width: @screen-sm-min) {
-    float: left;
-    width: percentage((@columns / @grid-columns));
-  }
-}
-.make-sm-column-offset(@columns) {
-  @media (min-width: @screen-sm-min) {
-    margin-left: percentage((@columns / @grid-columns));
-  }
-}
-.make-sm-column-push(@columns) {
-  @media (min-width: @screen-sm-min) {
-    left: percentage((@columns / @grid-columns));
-  }
-}
-.make-sm-column-pull(@columns) {
-  @media (min-width: @screen-sm-min) {
-    right: percentage((@columns / @grid-columns));
-  }
-}
-
-// Generate the medium columns
-.make-md-column(@columns; @gutter: @grid-gutter-width) {
-  position: relative;
-  min-height: 1px;
-  padding-left:  (@gutter / 2);
-  padding-right: (@gutter / 2);
-
-  @media (min-width: @screen-md-min) {
-    float: left;
-    width: percentage((@columns / @grid-columns));
-  }
-}
-.make-md-column-offset(@columns) {
-  @media (min-width: @screen-md-min) {
-    margin-left: percentage((@columns / @grid-columns));
-  }
-}
-.make-md-column-push(@columns) {
-  @media (min-width: @screen-md-min) {
-    left: percentage((@columns / @grid-columns));
-  }
-}
-.make-md-column-pull(@columns) {
-  @media (min-width: @screen-md-min) {
-    right: percentage((@columns / @grid-columns));
-  }
-}
-
-// Generate the large columns
-.make-lg-column(@columns; @gutter: @grid-gutter-width) {
-  position: relative;
-  min-height: 1px;
-  padding-left:  (@gutter / 2);
-  padding-right: (@gutter / 2);
-
-  @media (min-width: @screen-lg-min) {
-    float: left;
-    width: percentage((@columns / @grid-columns));
-  }
-}
-.make-lg-column-offset(@columns) {
-  @media (min-width: @screen-lg-min) {
-    margin-left: percentage((@columns / @grid-columns));
-  }
-}
-.make-lg-column-push(@columns) {
-  @media (min-width: @screen-lg-min) {
-    left: percentage((@columns / @grid-columns));
-  }
-}
-.make-lg-column-pull(@columns) {
-  @media (min-width: @screen-lg-min) {
-    right: percentage((@columns / @grid-columns));
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/labels.less b/addons/web/static/lib/bootstrap/less/mixins/labels.less
deleted file mode 100644
index 9f7a67ee3d0..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/labels.less
+++ /dev/null
@@ -1,12 +0,0 @@
-// Labels
-
-.label-variant(@color) {
-  background-color: @color;
-
-  &[href] {
-    &:hover,
-    &:focus {
-      background-color: darken(@color, 10%);
-    }
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/list-group.less b/addons/web/static/lib/bootstrap/less/mixins/list-group.less
deleted file mode 100644
index 03aa19069d9..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/list-group.less
+++ /dev/null
@@ -1,30 +0,0 @@
-// List Groups
-
-.list-group-item-variant(@state; @background; @color) {
-  .list-group-item-@{state} {
-    color: @color;
-    background-color: @background;
-
-    a&,
-    button& {
-      color: @color;
-
-      .list-group-item-heading {
-        color: inherit;
-      }
-
-      &:hover,
-      &:focus {
-        color: @color;
-        background-color: darken(@background, 5%);
-      }
-      &.active,
-      &.active:hover,
-      &.active:focus {
-        color: #fff;
-        background-color: @color;
-        border-color: @color;
-      }
-    }
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/opacity.less b/addons/web/static/lib/bootstrap/less/mixins/opacity.less
deleted file mode 100644
index 33ed25ce676..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/opacity.less
+++ /dev/null
@@ -1,8 +0,0 @@
-// Opacity
-
-.opacity(@opacity) {
-  opacity: @opacity;
-  // IE8 filter
-  @opacity-ie: (@opacity * 100);
-  filter: ~"alpha(opacity=@{opacity-ie})";
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/pagination.less b/addons/web/static/lib/bootstrap/less/mixins/pagination.less
deleted file mode 100644
index 618804f2dee..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/pagination.less
+++ /dev/null
@@ -1,24 +0,0 @@
-// Pagination
-
-.pagination-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
-  > li {
-    > a,
-    > span {
-      padding: @padding-vertical @padding-horizontal;
-      font-size: @font-size;
-      line-height: @line-height;
-    }
-    &:first-child {
-      > a,
-      > span {
-        .border-left-radius(@border-radius);
-      }
-    }
-    &:last-child {
-      > a,
-      > span {
-        .border-right-radius(@border-radius);
-      }
-    }
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/panels.less b/addons/web/static/lib/bootstrap/less/mixins/panels.less
deleted file mode 100644
index 49ee10d4ad3..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/panels.less
+++ /dev/null
@@ -1,24 +0,0 @@
-// Panels
-
-.panel-variant(@border; @heading-text-color; @heading-bg-color; @heading-border) {
-  border-color: @border;
-
-  & > .panel-heading {
-    color: @heading-text-color;
-    background-color: @heading-bg-color;
-    border-color: @heading-border;
-
-    + .panel-collapse > .panel-body {
-      border-top-color: @border;
-    }
-    .badge {
-      color: @heading-bg-color;
-      background-color: @heading-text-color;
-    }
-  }
-  & > .panel-footer {
-    + .panel-collapse > .panel-body {
-      border-bottom-color: @border;
-    }
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/responsive-visibility.less b/addons/web/static/lib/bootstrap/less/mixins/responsive-visibility.less
deleted file mode 100644
index ecf1e979fd2..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/responsive-visibility.less
+++ /dev/null
@@ -1,15 +0,0 @@
-// Responsive utilities
-
-//
-// More easily include all the states for responsive-utilities.less.
-.responsive-visibility() {
-  display: block !important;
-  table&  { display: table !important; }
-  tr&     { display: table-row !important; }
-  th&,
-  td&     { display: table-cell !important; }
-}
-
-.responsive-invisibility() {
-  display: none !important;
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/size.less b/addons/web/static/lib/bootstrap/less/mixins/size.less
deleted file mode 100644
index a8be6508960..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/size.less
+++ /dev/null
@@ -1,10 +0,0 @@
-// Sizing shortcuts
-
-.size(@width; @height) {
-  width: @width;
-  height: @height;
-}
-
-.square(@size) {
-  .size(@size; @size);
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/text-emphasis.less b/addons/web/static/lib/bootstrap/less/mixins/text-emphasis.less
deleted file mode 100644
index 9e8a77a6985..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/text-emphasis.less
+++ /dev/null
@@ -1,9 +0,0 @@
-// Typography
-
-.text-emphasis-variant(@color) {
-  color: @color;
-  a&:hover,
-  a&:focus {
-    color: darken(@color, 10%);
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/vendor-prefixes.less b/addons/web/static/lib/bootstrap/less/mixins/vendor-prefixes.less
deleted file mode 100644
index 2b5e74b99ed..00000000000
--- a/addons/web/static/lib/bootstrap/less/mixins/vendor-prefixes.less
+++ /dev/null
@@ -1,227 +0,0 @@
-// Vendor Prefixes
-//
-// All vendor mixins are deprecated as of v3.2.0 due to the introduction of
-// Autoprefixer in our Gruntfile. They have been removed in v4.
-
-// - Animations
-// - Backface visibility
-// - Box shadow
-// - Box sizing
-// - Content columns
-// - Hyphens
-// - Placeholder text
-// - Transformations
-// - Transitions
-// - User Select
-
-
-// Animations
-.animation(@animation) {
-  -webkit-animation: @animation;
-       -o-animation: @animation;
-          animation: @animation;
-}
-.animation-name(@name) {
-  -webkit-animation-name: @name;
-          animation-name: @name;
-}
-.animation-duration(@duration) {
-  -webkit-animation-duration: @duration;
-          animation-duration: @duration;
-}
-.animation-timing-function(@timing-function) {
-  -webkit-animation-timing-function: @timing-function;
-          animation-timing-function: @timing-function;
-}
-.animation-delay(@delay) {
-  -webkit-animation-delay: @delay;
-          animation-delay: @delay;
-}
-.animation-iteration-count(@iteration-count) {
-  -webkit-animation-iteration-count: @iteration-count;
-          animation-iteration-count: @iteration-count;
-}
-.animation-direction(@direction) {
-  -webkit-animation-direction: @direction;
-          animation-direction: @direction;
-}
-.animation-fill-mode(@fill-mode) {
-  -webkit-animation-fill-mode: @fill-mode;
-          animation-fill-mode: @fill-mode;
-}
-
-// Backface visibility
-// Prevent browsers from flickering when using CSS 3D transforms.
-// Default value is `visible`, but can be changed to `hidden`
-
-.backface-visibility(@visibility) {
-  -webkit-backface-visibility: @visibility;
-     -moz-backface-visibility: @visibility;
-          backface-visibility: @visibility;
-}
-
-// Drop shadows
-//
-// Note: Deprecated `.box-shadow()` as of v3.1.0 since all of Bootstrap's
-// supported browsers that have box shadow capabilities now support it.
-
-.box-shadow(@shadow) {
-  -webkit-box-shadow: @shadow; // iOS <4.3 & Android <4.1
-          box-shadow: @shadow;
-}
-
-// Box sizing
-.box-sizing(@boxmodel) {
-  -webkit-box-sizing: @boxmodel;
-     -moz-box-sizing: @boxmodel;
-          box-sizing: @boxmodel;
-}
-
-// CSS3 Content Columns
-.content-columns(@column-count; @column-gap: @grid-gutter-width) {
-  -webkit-column-count: @column-count;
-     -moz-column-count: @column-count;
-          column-count: @column-count;
-  -webkit-column-gap: @column-gap;
-     -moz-column-gap: @column-gap;
-          column-gap: @column-gap;
-}
-
-// Optional hyphenation
-.hyphens(@mode: auto) {
-  word-wrap: break-word;
-  -webkit-hyphens: @mode;
-     -moz-hyphens: @mode;
-      -ms-hyphens: @mode; // IE10+
-       -o-hyphens: @mode;
-          hyphens: @mode;
-}
-
-// Placeholder text
-.placeholder(@color: @input-color-placeholder) {
-  // Firefox
-  &::-moz-placeholder {
-    color: @color;
-    opacity: 1; // Override Firefox's unusual default opacity; see https://github.com/twbs/bootstrap/pull/11526
-  }
-  &:-ms-input-placeholder { color: @color; } // Internet Explorer 10+
-  &::-webkit-input-placeholder  { color: @color; } // Safari and Chrome
-}
-
-// Transformations
-.scale(@ratio) {
-  -webkit-transform: scale(@ratio);
-      -ms-transform: scale(@ratio); // IE9 only
-       -o-transform: scale(@ratio);
-          transform: scale(@ratio);
-}
-.scale(@ratioX; @ratioY) {
-  -webkit-transform: scale(@ratioX, @ratioY);
-      -ms-transform: scale(@ratioX, @ratioY); // IE9 only
-       -o-transform: scale(@ratioX, @ratioY);
-          transform: scale(@ratioX, @ratioY);
-}
-.scaleX(@ratio) {
-  -webkit-transform: scaleX(@ratio);
-      -ms-transform: scaleX(@ratio); // IE9 only
-       -o-transform: scaleX(@ratio);
-          transform: scaleX(@ratio);
-}
-.scaleY(@ratio) {
-  -webkit-transform: scaleY(@ratio);
-      -ms-transform: scaleY(@ratio); // IE9 only
-       -o-transform: scaleY(@ratio);
-          transform: scaleY(@ratio);
-}
-.skew(@x; @y) {
-  -webkit-transform: skewX(@x) skewY(@y);
-      -ms-transform: skewX(@x) skewY(@y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+
-       -o-transform: skewX(@x) skewY(@y);
-          transform: skewX(@x) skewY(@y);
-}
-.translate(@x; @y) {
-  -webkit-transform: translate(@x, @y);
-      -ms-transform: translate(@x, @y); // IE9 only
-       -o-transform: translate(@x, @y);
-          transform: translate(@x, @y);
-}
-.translate3d(@x; @y; @z) {
-  -webkit-transform: translate3d(@x, @y, @z);
-          transform: translate3d(@x, @y, @z);
-}
-.rotate(@degrees) {
-  -webkit-transform: rotate(@degrees);
-      -ms-transform: rotate(@degrees); // IE9 only
-       -o-transform: rotate(@degrees);
-          transform: rotate(@degrees);
-}
-.rotateX(@degrees) {
-  -webkit-transform: rotateX(@degrees);
-      -ms-transform: rotateX(@degrees); // IE9 only
-       -o-transform: rotateX(@degrees);
-          transform: rotateX(@degrees);
-}
-.rotateY(@degrees) {
-  -webkit-transform: rotateY(@degrees);
-      -ms-transform: rotateY(@degrees); // IE9 only
-       -o-transform: rotateY(@degrees);
-          transform: rotateY(@degrees);
-}
-.perspective(@perspective) {
-  -webkit-perspective: @perspective;
-     -moz-perspective: @perspective;
-          perspective: @perspective;
-}
-.perspective-origin(@perspective) {
-  -webkit-perspective-origin: @perspective;
-     -moz-perspective-origin: @perspective;
-          perspective-origin: @perspective;
-}
-.transform-origin(@origin) {
-  -webkit-transform-origin: @origin;
-     -moz-transform-origin: @origin;
-      -ms-transform-origin: @origin; // IE9 only
-          transform-origin: @origin;
-}
-
-
-// Transitions
-
-.transition(@transition) {
-  -webkit-transition: @transition;
-       -o-transition: @transition;
-          transition: @transition;
-}
-.transition-property(@transition-property) {
-  -webkit-transition-property: @transition-property;
-          transition-property: @transition-property;
-}
-.transition-delay(@transition-delay) {
-  -webkit-transition-delay: @transition-delay;
-          transition-delay: @transition-delay;
-}
-.transition-duration(@transition-duration) {
-  -webkit-transition-duration: @transition-duration;
-          transition-duration: @transition-duration;
-}
-.transition-timing-function(@timing-function) {
-  -webkit-transition-timing-function: @timing-function;
-          transition-timing-function: @timing-function;
-}
-.transition-transform(@transition) {
-  -webkit-transition: -webkit-transform @transition;
-     -moz-transition: -moz-transform @transition;
-       -o-transition: -o-transform @transition;
-          transition: transform @transition;
-}
-
-
-// User select
-// For selecting text on the page
-
-.user-select(@select) {
-  -webkit-user-select: @select;
-     -moz-user-select: @select;
-      -ms-user-select: @select; // IE10+
-          user-select: @select;
-}
diff --git a/addons/web/static/lib/bootstrap/less/pagination.less b/addons/web/static/lib/bootstrap/less/pagination.less
deleted file mode 100644
index 31f77aae4ed..00000000000
--- a/addons/web/static/lib/bootstrap/less/pagination.less
+++ /dev/null
@@ -1,89 +0,0 @@
-//
-// Pagination (multiple pages)
-// --------------------------------------------------
-.pagination {
-  display: inline-block;
-  padding-left: 0;
-  margin: @line-height-computed 0;
-  border-radius: @border-radius-base;
-
-  > li {
-    display: inline; // Remove list-style and block-level defaults
-    > a,
-    > span {
-      position: relative;
-      float: left; // Collapse white-space
-      padding: @padding-base-vertical @padding-base-horizontal;
-      line-height: @line-height-base;
-      text-decoration: none;
-      color: @pagination-color;
-      background-color: @pagination-bg;
-      border: 1px solid @pagination-border;
-      margin-left: -1px;
-    }
-    &:first-child {
-      > a,
-      > span {
-        margin-left: 0;
-        .border-left-radius(@border-radius-base);
-      }
-    }
-    &:last-child {
-      > a,
-      > span {
-        .border-right-radius(@border-radius-base);
-      }
-    }
-  }
-
-  > li > a,
-  > li > span {
-    &:hover,
-    &:focus {
-      z-index: 2;
-      color: @pagination-hover-color;
-      background-color: @pagination-hover-bg;
-      border-color: @pagination-hover-border;
-    }
-  }
-
-  > .active > a,
-  > .active > span {
-    &,
-    &:hover,
-    &:focus {
-      z-index: 3;
-      color: @pagination-active-color;
-      background-color: @pagination-active-bg;
-      border-color: @pagination-active-border;
-      cursor: default;
-    }
-  }
-
-  > .disabled {
-    > span,
-    > span:hover,
-    > span:focus,
-    > a,
-    > a:hover,
-    > a:focus {
-      color: @pagination-disabled-color;
-      background-color: @pagination-disabled-bg;
-      border-color: @pagination-disabled-border;
-      cursor: @cursor-disabled;
-    }
-  }
-}
-
-// Sizing
-// --------------------------------------------------
-
-// Large
-.pagination-lg {
-  .pagination-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large);
-}
-
-// Small
-.pagination-sm {
-  .pagination-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small);
-}
diff --git a/addons/web/static/lib/bootstrap/less/popovers.less b/addons/web/static/lib/bootstrap/less/popovers.less
deleted file mode 100644
index 3a62a6455ac..00000000000
--- a/addons/web/static/lib/bootstrap/less/popovers.less
+++ /dev/null
@@ -1,131 +0,0 @@
-//
-// Popovers
-// --------------------------------------------------
-
-
-.popover {
-  position: absolute;
-  top: 0;
-  left: 0;
-  z-index: @zindex-popover;
-  display: none;
-  max-width: @popover-max-width;
-  padding: 1px;
-  // Our parent element can be arbitrary since popovers are by default inserted as a sibling of their target element.
-  // So reset our font and text properties to avoid inheriting weird values.
-  .reset-text();
-  font-size: @font-size-base;
-
-  background-color: @popover-bg;
-  background-clip: padding-box;
-  border: 1px solid @popover-fallback-border-color;
-  border: 1px solid @popover-border-color;
-  border-radius: @border-radius-large;
-  .box-shadow(0 5px 10px rgba(0,0,0,.2));
-
-  // Offset the popover to account for the popover arrow
-  &.top     { margin-top: -@popover-arrow-width; }
-  &.right   { margin-left: @popover-arrow-width; }
-  &.bottom  { margin-top: @popover-arrow-width; }
-  &.left    { margin-left: -@popover-arrow-width; }
-}
-
-.popover-title {
-  margin: 0; // reset heading margin
-  padding: 8px 14px;
-  font-size: @font-size-base;
-  background-color: @popover-title-bg;
-  border-bottom: 1px solid darken(@popover-title-bg, 5%);
-  border-radius: (@border-radius-large - 1) (@border-radius-large - 1) 0 0;
-}
-
-.popover-content {
-  padding: 9px 14px;
-}
-
-// Arrows
-//
-// .arrow is outer, .arrow:after is inner
-
-.popover > .arrow {
-  &,
-  &:after {
-    position: absolute;
-    display: block;
-    width: 0;
-    height: 0;
-    border-color: transparent;
-    border-style: solid;
-  }
-}
-.popover > .arrow {
-  border-width: @popover-arrow-outer-width;
-}
-.popover > .arrow:after {
-  border-width: @popover-arrow-width;
-  content: "";
-}
-
-.popover {
-  &.top > .arrow {
-    left: 50%;
-    margin-left: -@popover-arrow-outer-width;
-    border-bottom-width: 0;
-    border-top-color: @popover-arrow-outer-fallback-color; // IE8 fallback
-    border-top-color: @popover-arrow-outer-color;
-    bottom: -@popover-arrow-outer-width;
-    &:after {
-      content: " ";
-      bottom: 1px;
-      margin-left: -@popover-arrow-width;
-      border-bottom-width: 0;
-      border-top-color: @popover-arrow-color;
-    }
-  }
-  &.right > .arrow {
-    top: 50%;
-    left: -@popover-arrow-outer-width;
-    margin-top: -@popover-arrow-outer-width;
-    border-left-width: 0;
-    border-right-color: @popover-arrow-outer-fallback-color; // IE8 fallback
-    border-right-color: @popover-arrow-outer-color;
-    &:after {
-      content: " ";
-      left: 1px;
-      bottom: -@popover-arrow-width;
-      border-left-width: 0;
-      border-right-color: @popover-arrow-color;
-    }
-  }
-  &.bottom > .arrow {
-    left: 50%;
-    margin-left: -@popover-arrow-outer-width;
-    border-top-width: 0;
-    border-bottom-color: @popover-arrow-outer-fallback-color; // IE8 fallback
-    border-bottom-color: @popover-arrow-outer-color;
-    top: -@popover-arrow-outer-width;
-    &:after {
-      content: " ";
-      top: 1px;
-      margin-left: -@popover-arrow-width;
-      border-top-width: 0;
-      border-bottom-color: @popover-arrow-color;
-    }
-  }
-
-  &.left > .arrow {
-    top: 50%;
-    right: -@popover-arrow-outer-width;
-    margin-top: -@popover-arrow-outer-width;
-    border-right-width: 0;
-    border-left-color: @popover-arrow-outer-fallback-color; // IE8 fallback
-    border-left-color: @popover-arrow-outer-color;
-    &:after {
-      content: " ";
-      right: 1px;
-      border-right-width: 0;
-      border-left-color: @popover-arrow-color;
-      bottom: -@popover-arrow-width;
-    }
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/theme.less b/addons/web/static/lib/bootstrap/less/theme.less
deleted file mode 100644
index fb6174427ba..00000000000
--- a/addons/web/static/lib/bootstrap/less/theme.less
+++ /dev/null
@@ -1,291 +0,0 @@
-/*!
- * Bootstrap v3.3.7 (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-//
-// Load core variables and mixins
-// --------------------------------------------------
-
-@import "variables.less";
-@import "mixins.less";
-
-
-//
-// Buttons
-// --------------------------------------------------
-
-// Common styles
-.btn-default,
-.btn-primary,
-.btn-success,
-.btn-info,
-.btn-warning,
-.btn-danger {
-  text-shadow: 0 -1px 0 rgba(0,0,0,.2);
-  @shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 1px rgba(0,0,0,.075);
-  .box-shadow(@shadow);
-
-  // Reset the shadow
-  &:active,
-  &.active {
-    .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
-  }
-
-  &.disabled,
-  &[disabled],
-  fieldset[disabled] & {
-    .box-shadow(none);
-  }
-
-  .badge {
-    text-shadow: none;
-  }
-}
-
-// Mixin for generating new styles
-.btn-styles(@btn-color: #555) {
-  #gradient > .vertical(@start-color: @btn-color; @end-color: darken(@btn-color, 12%));
-  .reset-filter(); // Disable gradients for IE9 because filter bleeds through rounded corners; see https://github.com/twbs/bootstrap/issues/10620
-  background-repeat: repeat-x;
-  border-color: darken(@btn-color, 14%);
-
-  &:hover,
-  &:focus  {
-    background-color: darken(@btn-color, 12%);
-    background-position: 0 -15px;
-  }
-
-  &:active,
-  &.active {
-    background-color: darken(@btn-color, 12%);
-    border-color: darken(@btn-color, 14%);
-  }
-
-  &.disabled,
-  &[disabled],
-  fieldset[disabled] & {
-    &,
-    &:hover,
-    &:focus,
-    &.focus,
-    &:active,
-    &.active {
-      background-color: darken(@btn-color, 12%);
-      background-image: none;
-    }
-  }
-}
-
-// Common styles
-.btn {
-  // Remove the gradient for the pressed/active state
-  &:active,
-  &.active {
-    background-image: none;
-  }
-}
-
-// Apply the mixin to the buttons
-.btn-default { .btn-styles(@btn-default-bg); text-shadow: 0 1px 0 #fff; border-color: #ccc; }
-.btn-primary { .btn-styles(@btn-primary-bg); }
-.btn-success { .btn-styles(@btn-success-bg); }
-.btn-info    { .btn-styles(@btn-info-bg); }
-.btn-warning { .btn-styles(@btn-warning-bg); }
-.btn-danger  { .btn-styles(@btn-danger-bg); }
-
-
-//
-// Images
-// --------------------------------------------------
-
-.thumbnail,
-.img-thumbnail {
-  .box-shadow(0 1px 2px rgba(0,0,0,.075));
-}
-
-
-//
-// Dropdowns
-// --------------------------------------------------
-
-.dropdown-menu > li > a:hover,
-.dropdown-menu > li > a:focus {
-  #gradient > .vertical(@start-color: @dropdown-link-hover-bg; @end-color: darken(@dropdown-link-hover-bg, 5%));
-  background-color: darken(@dropdown-link-hover-bg, 5%);
-}
-.dropdown-menu > .active > a,
-.dropdown-menu > .active > a:hover,
-.dropdown-menu > .active > a:focus {
-  #gradient > .vertical(@start-color: @dropdown-link-active-bg; @end-color: darken(@dropdown-link-active-bg, 5%));
-  background-color: darken(@dropdown-link-active-bg, 5%);
-}
-
-
-//
-// Navbar
-// --------------------------------------------------
-
-// Default navbar
-.navbar-default {
-  #gradient > .vertical(@start-color: lighten(@navbar-default-bg, 10%); @end-color: @navbar-default-bg);
-  .reset-filter(); // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered
-  border-radius: @navbar-border-radius;
-  @shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 5px rgba(0,0,0,.075);
-  .box-shadow(@shadow);
-
-  .navbar-nav > .open > a,
-  .navbar-nav > .active > a {
-    #gradient > .vertical(@start-color: darken(@navbar-default-link-active-bg, 5%); @end-color: darken(@navbar-default-link-active-bg, 2%));
-    .box-shadow(inset 0 3px 9px rgba(0,0,0,.075));
-  }
-}
-.navbar-brand,
-.navbar-nav > li > a {
-  text-shadow: 0 1px 0 rgba(255,255,255,.25);
-}
-
-// Inverted navbar
-.navbar-inverse {
-  #gradient > .vertical(@start-color: lighten(@navbar-inverse-bg, 10%); @end-color: @navbar-inverse-bg);
-  .reset-filter(); // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered; see https://github.com/twbs/bootstrap/issues/10257
-  border-radius: @navbar-border-radius;
-  .navbar-nav > .open > a,
-  .navbar-nav > .active > a {
-    #gradient > .vertical(@start-color: @navbar-inverse-link-active-bg; @end-color: lighten(@navbar-inverse-link-active-bg, 2.5%));
-    .box-shadow(inset 0 3px 9px rgba(0,0,0,.25));
-  }
-
-  .navbar-brand,
-  .navbar-nav > li > a {
-    text-shadow: 0 -1px 0 rgba(0,0,0,.25);
-  }
-}
-
-// Undo rounded corners in static and fixed navbars
-.navbar-static-top,
-.navbar-fixed-top,
-.navbar-fixed-bottom {
-  border-radius: 0;
-}
-
-// Fix active state of dropdown items in collapsed mode
-@media (max-width: @grid-float-breakpoint-max) {
-  .navbar .navbar-nav .open .dropdown-menu > .active > a {
-    &,
-    &:hover,
-    &:focus {
-      color: #fff;
-      #gradient > .vertical(@start-color: @dropdown-link-active-bg; @end-color: darken(@dropdown-link-active-bg, 5%));
-    }
-  }
-}
-
-
-//
-// Alerts
-// --------------------------------------------------
-
-// Common styles
-.alert {
-  text-shadow: 0 1px 0 rgba(255,255,255,.2);
-  @shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 1px 2px rgba(0,0,0,.05);
-  .box-shadow(@shadow);
-}
-
-// Mixin for generating new styles
-.alert-styles(@color) {
-  #gradient > .vertical(@start-color: @color; @end-color: darken(@color, 7.5%));
-  border-color: darken(@color, 15%);
-}
-
-// Apply the mixin to the alerts
-.alert-success    { .alert-styles(@alert-success-bg); }
-.alert-info       { .alert-styles(@alert-info-bg); }
-.alert-warning    { .alert-styles(@alert-warning-bg); }
-.alert-danger     { .alert-styles(@alert-danger-bg); }
-
-
-//
-// Progress bars
-// --------------------------------------------------
-
-// Give the progress background some depth
-.progress {
-  #gradient > .vertical(@start-color: darken(@progress-bg, 4%); @end-color: @progress-bg)
-}
-
-// Mixin for generating new styles
-.progress-bar-styles(@color) {
-  #gradient > .vertical(@start-color: @color; @end-color: darken(@color, 10%));
-}
-
-// Apply the mixin to the progress bars
-.progress-bar            { .progress-bar-styles(@progress-bar-bg); }
-.progress-bar-success    { .progress-bar-styles(@progress-bar-success-bg); }
-.progress-bar-info       { .progress-bar-styles(@progress-bar-info-bg); }
-.progress-bar-warning    { .progress-bar-styles(@progress-bar-warning-bg); }
-.progress-bar-danger     { .progress-bar-styles(@progress-bar-danger-bg); }
-
-// Reset the striped class because our mixins don't do multiple gradients and
-// the above custom styles override the new `.progress-bar-striped` in v3.2.0.
-.progress-bar-striped {
-  #gradient > .striped();
-}
-
-
-//
-// List groups
-// --------------------------------------------------
-
-.list-group {
-  border-radius: @border-radius-base;
-  .box-shadow(0 1px 2px rgba(0,0,0,.075));
-}
-.list-group-item.active,
-.list-group-item.active:hover,
-.list-group-item.active:focus {
-  text-shadow: 0 -1px 0 darken(@list-group-active-bg, 10%);
-  #gradient > .vertical(@start-color: @list-group-active-bg; @end-color: darken(@list-group-active-bg, 7.5%));
-  border-color: darken(@list-group-active-border, 7.5%);
-
-  .badge {
-    text-shadow: none;
-  }
-}
-
-
-//
-// Panels
-// --------------------------------------------------
-
-// Common styles
-.panel {
-  .box-shadow(0 1px 2px rgba(0,0,0,.05));
-}
-
-// Mixin for generating new styles
-.panel-heading-styles(@color) {
-  #gradient > .vertical(@start-color: @color; @end-color: darken(@color, 5%));
-}
-
-// Apply the mixin to the panel headings only
-.panel-default > .panel-heading   { .panel-heading-styles(@panel-default-heading-bg); }
-.panel-primary > .panel-heading   { .panel-heading-styles(@panel-primary-heading-bg); }
-.panel-success > .panel-heading   { .panel-heading-styles(@panel-success-heading-bg); }
-.panel-info > .panel-heading      { .panel-heading-styles(@panel-info-heading-bg); }
-.panel-warning > .panel-heading   { .panel-heading-styles(@panel-warning-heading-bg); }
-.panel-danger > .panel-heading    { .panel-heading-styles(@panel-danger-heading-bg); }
-
-
-//
-// Wells
-// --------------------------------------------------
-
-.well {
-  #gradient > .vertical(@start-color: darken(@well-bg, 5%); @end-color: @well-bg);
-  border-color: darken(@well-bg, 10%);
-  @shadow: inset 0 1px 3px rgba(0,0,0,.05), 0 1px 0 rgba(255,255,255,.1);
-  .box-shadow(@shadow);
-}
diff --git a/addons/web/static/lib/bootstrap/less/thumbnails.less b/addons/web/static/lib/bootstrap/less/thumbnails.less
deleted file mode 100644
index 0713e67d006..00000000000
--- a/addons/web/static/lib/bootstrap/less/thumbnails.less
+++ /dev/null
@@ -1,36 +0,0 @@
-//
-// Thumbnails
-// --------------------------------------------------
-
-
-// Mixin and adjust the regular image class
-.thumbnail {
-  display: block;
-  padding: @thumbnail-padding;
-  margin-bottom: @line-height-computed;
-  line-height: @line-height-base;
-  background-color: @thumbnail-bg;
-  border: 1px solid @thumbnail-border;
-  border-radius: @thumbnail-border-radius;
-  .transition(border .2s ease-in-out);
-
-  > img,
-  a > img {
-    &:extend(.img-responsive);
-    margin-left: auto;
-    margin-right: auto;
-  }
-
-  // Add a hover state for linked versions only
-  a&:hover,
-  a&:focus,
-  a&.active {
-    border-color: @link-color;
-  }
-
-  // Image captions
-  .caption {
-    padding: @thumbnail-caption-padding;
-    color: @thumbnail-caption-color;
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/tooltip.less b/addons/web/static/lib/bootstrap/less/tooltip.less
deleted file mode 100644
index b48d63e07ad..00000000000
--- a/addons/web/static/lib/bootstrap/less/tooltip.less
+++ /dev/null
@@ -1,101 +0,0 @@
-//
-// Tooltips
-// --------------------------------------------------
-
-
-// Base class
-.tooltip {
-  position: absolute;
-  z-index: @zindex-tooltip;
-  display: block;
-  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
-  // So reset our font and text properties to avoid inheriting weird values.
-  .reset-text();
-  font-size: @font-size-small;
-
-  .opacity(0);
-
-  &.in     { .opacity(@tooltip-opacity); }
-  &.top    { margin-top:  -3px; padding: @tooltip-arrow-width 0; }
-  &.right  { margin-left:  3px; padding: 0 @tooltip-arrow-width; }
-  &.bottom { margin-top:   3px; padding: @tooltip-arrow-width 0; }
-  &.left   { margin-left: -3px; padding: 0 @tooltip-arrow-width; }
-}
-
-// Wrapper for the tooltip content
-.tooltip-inner {
-  max-width: @tooltip-max-width;
-  padding: 3px 8px;
-  color: @tooltip-color;
-  text-align: center;
-  background-color: @tooltip-bg;
-  border-radius: @border-radius-base;
-}
-
-// Arrows
-.tooltip-arrow {
-  position: absolute;
-  width: 0;
-  height: 0;
-  border-color: transparent;
-  border-style: solid;
-}
-// Note: Deprecated .top-left, .top-right, .bottom-left, and .bottom-right as of v3.3.1
-.tooltip {
-  &.top .tooltip-arrow {
-    bottom: 0;
-    left: 50%;
-    margin-left: -@tooltip-arrow-width;
-    border-width: @tooltip-arrow-width @tooltip-arrow-width 0;
-    border-top-color: @tooltip-arrow-color;
-  }
-  &.top-left .tooltip-arrow {
-    bottom: 0;
-    right: @tooltip-arrow-width;
-    margin-bottom: -@tooltip-arrow-width;
-    border-width: @tooltip-arrow-width @tooltip-arrow-width 0;
-    border-top-color: @tooltip-arrow-color;
-  }
-  &.top-right .tooltip-arrow {
-    bottom: 0;
-    left: @tooltip-arrow-width;
-    margin-bottom: -@tooltip-arrow-width;
-    border-width: @tooltip-arrow-width @tooltip-arrow-width 0;
-    border-top-color: @tooltip-arrow-color;
-  }
-  &.right .tooltip-arrow {
-    top: 50%;
-    left: 0;
-    margin-top: -@tooltip-arrow-width;
-    border-width: @tooltip-arrow-width @tooltip-arrow-width @tooltip-arrow-width 0;
-    border-right-color: @tooltip-arrow-color;
-  }
-  &.left .tooltip-arrow {
-    top: 50%;
-    right: 0;
-    margin-top: -@tooltip-arrow-width;
-    border-width: @tooltip-arrow-width 0 @tooltip-arrow-width @tooltip-arrow-width;
-    border-left-color: @tooltip-arrow-color;
-  }
-  &.bottom .tooltip-arrow {
-    top: 0;
-    left: 50%;
-    margin-left: -@tooltip-arrow-width;
-    border-width: 0 @tooltip-arrow-width @tooltip-arrow-width;
-    border-bottom-color: @tooltip-arrow-color;
-  }
-  &.bottom-left .tooltip-arrow {
-    top: 0;
-    right: @tooltip-arrow-width;
-    margin-top: -@tooltip-arrow-width;
-    border-width: 0 @tooltip-arrow-width @tooltip-arrow-width;
-    border-bottom-color: @tooltip-arrow-color;
-  }
-  &.bottom-right .tooltip-arrow {
-    top: 0;
-    left: @tooltip-arrow-width;
-    margin-top: -@tooltip-arrow-width;
-    border-width: 0 @tooltip-arrow-width @tooltip-arrow-width;
-    border-bottom-color: @tooltip-arrow-color;
-  }
-}
diff --git a/addons/web/static/lib/bootstrap/less/variables.less b/addons/web/static/lib/bootstrap/less/variables.less
deleted file mode 100644
index 03b54980ae2..00000000000
--- a/addons/web/static/lib/bootstrap/less/variables.less
+++ /dev/null
@@ -1,869 +0,0 @@
-//
-// Variables
-// --------------------------------------------------
-
-
-//== Colors
-//
-//## Gray and brand colors for use across Bootstrap.
-
-@gray-base:              #000;
-@gray-darker:            lighten(@gray-base, 13.5%); // #222
-@gray-dark:              lighten(@gray-base, 20%);   // #333
-@gray:                   lighten(@gray-base, 33.5%); // #555
-@gray-light:             lighten(@gray-base, 46.7%); // #777
-@gray-lighter:           lighten(@gray-base, 93.5%); // #eee
-
-@brand-primary:         darken(#428bca, 6.5%); // #337ab7
-@brand-success:         #5cb85c;
-@brand-info:            #5bc0de;
-@brand-warning:         #f0ad4e;
-@brand-danger:          #d9534f;
-
-
-//== Scaffolding
-//
-//## Settings for some of the most global styles.
-
-//** Background color for `<body>`.
-@body-bg:               #fff;
-//** Global text color on `<body>`.
-@text-color:            @gray-dark;
-
-//** Global textual link color.
-@link-color:            @brand-primary;
-//** Link hover color set via `darken()` function.
-@link-hover-color:      darken(@link-color, 15%);
-//** Link hover decoration.
-@link-hover-decoration: underline;
-
-
-//== Typography
-//
-//## Font, line-height, and color for body text, headings, and more.
-
-@font-family-sans-serif:  "Helvetica Neue", Helvetica, Arial, sans-serif;
-@font-family-serif:       Georgia, "Times New Roman", Times, serif;
-//** Default monospace fonts for `<code>`, `<kbd>`, and `<pre>`.
-@font-family-monospace:   Menlo, Monaco, Consolas, "Courier New", monospace;
-@font-family-base:        @font-family-sans-serif;
-
-@font-size-base:          14px;
-@font-size-large:         ceil((@font-size-base * 1.25)); // ~18px
-@font-size-small:         ceil((@font-size-base * 0.85)); // ~12px
-
-@font-size-h1:            floor((@font-size-base * 2.6)); // ~36px
-@font-size-h2:            floor((@font-size-base * 2.15)); // ~30px
-@font-size-h3:            ceil((@font-size-base * 1.7)); // ~24px
-@font-size-h4:            ceil((@font-size-base * 1.25)); // ~18px
-@font-size-h5:            @font-size-base;
-@font-size-h6:            ceil((@font-size-base * 0.85)); // ~12px
-
-//** Unit-less `line-height` for use in components like buttons.
-@line-height-base:        1.428571429; // 20/14
-//** Computed "line-height" (`font-size` * `line-height`) for use with `margin`, `padding`, etc.
-@line-height-computed:    floor((@font-size-base * @line-height-base)); // ~20px
-
-//** By default, this inherits from the `<body>`.
-@headings-font-family:    inherit;
-@headings-font-weight:    500;
-@headings-line-height:    1.1;
-@headings-color:          inherit;
-
-
-//== Iconography
-//
-//## Specify custom location and filename of the included Glyphicons icon font. Useful for those including Bootstrap via Bower.
-
-//** Load fonts from this directory.
-@icon-font-path:          "../fonts/";
-//** File name for all font files.
-@icon-font-name:          "glyphicons-halflings-regular";
-//** Element ID within SVG icon file.
-@icon-font-svg-id:        "glyphicons_halflingsregular";
-
-
-//== Components
-//
-//## Define common padding and border radius sizes and more. Values based on 14px text and 1.428 line-height (~20px to start).
-
-@padding-base-vertical:     6px;
-@padding-base-horizontal:   12px;
-
-@padding-large-vertical:    10px;
-@padding-large-horizontal:  16px;
-
-@padding-small-vertical:    5px;
-@padding-small-horizontal:  10px;
-
-@padding-xs-vertical:       1px;
-@padding-xs-horizontal:     5px;
-
-@line-height-large:         1.3333333; // extra decimals for Win 8.1 Chrome
-@line-height-small:         1.5;
-
-@border-radius-base:        4px;
-@border-radius-large:       6px;
-@border-radius-small:       3px;
-
-//** Global color for active items (e.g., navs or dropdowns).
-@component-active-color:    #fff;
-//** Global background color for active items (e.g., navs or dropdowns).
-@component-active-bg:       @brand-primary;
-
-//** Width of the `border` for generating carets that indicate dropdowns.
-@caret-width-base:          4px;
-//** Carets increase slightly in size for larger components.
-@caret-width-large:         5px;
-
-
-//== Tables
-//
-//## Customizes the `.table` component with basic values, each used across all table variations.
-
-//** Padding for `<th>`s and `<td>`s.
-@table-cell-padding:            8px;
-//** Padding for cells in `.table-condensed`.
-@table-condensed-cell-padding:  5px;
-
-//** Default background color used for all tables.
-@table-bg:                      transparent;
-//** Background color used for `.table-striped`.
-@table-bg-accent:               #f9f9f9;
-//** Background color used for `.table-hover`.
-@table-bg-hover:                #f5f5f5;
-@table-bg-active:               @table-bg-hover;
-
-//** Border color for table and cell borders.
-@table-border-color:            #ddd;
-
-
-//== Buttons
-//
-//## For each of Bootstrap's buttons, define text, background and border color.
-
-@btn-font-weight:                normal;
-
-@btn-default-color:              #333;
-@btn-default-bg:                 #fff;
-@btn-default-border:             #ccc;
-
-@btn-primary-color:              #fff;
-@btn-primary-bg:                 @brand-primary;
-@btn-primary-border:             darken(@btn-primary-bg, 5%);
-
-@btn-success-color:              #fff;
-@btn-success-bg:                 @brand-success;
-@btn-success-border:             darken(@btn-success-bg, 5%);
-
-@btn-info-color:                 #fff;
-@btn-info-bg:                    @brand-info;
-@btn-info-border:                darken(@btn-info-bg, 5%);
-
-@btn-warning-color:              #fff;
-@btn-warning-bg:                 @brand-warning;
-@btn-warning-border:             darken(@btn-warning-bg, 5%);
-
-@btn-danger-color:               #fff;
-@btn-danger-bg:                  @brand-danger;
-@btn-danger-border:              darken(@btn-danger-bg, 5%);
-
-@btn-link-disabled-color:        @gray-light;
-
-// Allows for customizing button radius independently from global border radius
-@btn-border-radius-base:         @border-radius-base;
-@btn-border-radius-large:        @border-radius-large;
-@btn-border-radius-small:        @border-radius-small;
-
-
-//== Forms
-//
-//##
-
-//** `<input>` background color
-@input-bg:                       #fff;
-//** `<input disabled>` background color
-@input-bg-disabled:              @gray-lighter;
-
-//** Text color for `<input>`s
-@input-color:                    @gray;
-//** `<input>` border color
-@input-border:                   #ccc;
-
-// TODO: Rename `@input-border-radius` to `@input-border-radius-base` in v4
-//** Default `.form-control` border radius
-// This has no effect on `<select>`s in some browsers, due to the limited stylability of `<select>`s in CSS.
-@input-border-radius:            @border-radius-base;
-//** Large `.form-control` border radius
-@input-border-radius-large:      @border-radius-large;
-//** Small `.form-control` border radius
-@input-border-radius-small:      @border-radius-small;
-
-//** Border color for inputs on focus
-@input-border-focus:             #66afe9;
-
-//** Placeholder text color
-@input-color-placeholder:        #999;
-
-//** Default `.form-control` height
-@input-height-base:              (@line-height-computed + (@padding-base-vertical * 2) + 2);
-//** Large `.form-control` height
-@input-height-large:             (ceil(@font-size-large * @line-height-large) + (@padding-large-vertical * 2) + 2);
-//** Small `.form-control` height
-@input-height-small:             (floor(@font-size-small * @line-height-small) + (@padding-small-vertical * 2) + 2);
-
-//** `.form-group` margin
-@form-group-margin-bottom:       15px;
-
-@legend-color:                   @gray-dark;
-@legend-border-color:            #e5e5e5;
-
-//** Background color for textual input addons
-@input-group-addon-bg:           @gray-lighter;
-//** Border color for textual input addons
-@input-group-addon-border-color: @input-border;
-
-//** Disabled cursor for form controls and buttons.
-@cursor-disabled:                not-allowed;
-
-
-//== Dropdowns
-//
-//## Dropdown menu container and contents.
-
-//** Background for the dropdown menu.
-@dropdown-bg:                    #fff;
-//** Dropdown menu `border-color`.
-@dropdown-border:                rgba(0,0,0,.15);
-//** Dropdown menu `border-color` **for IE8**.
-@dropdown-fallback-border:       #ccc;
-//** Divider color for between dropdown items.
-@dropdown-divider-bg:            #e5e5e5;
-
-//** Dropdown link text color.
-@dropdown-link-color:            @gray-dark;
-//** Hover color for dropdown links.
-@dropdown-link-hover-color:      darken(@gray-dark, 5%);
-//** Hover background for dropdown links.
-@dropdown-link-hover-bg:         #f5f5f5;
-
-//** Active dropdown menu item text color.
-@dropdown-link-active-color:     @component-active-color;
-//** Active dropdown menu item background color.
-@dropdown-link-active-bg:        @component-active-bg;
-
-//** Disabled dropdown menu item background color.
-@dropdown-link-disabled-color:   @gray-light;
-
-//** Text color for headers within dropdown menus.
-@dropdown-header-color:          @gray-light;
-
-//** Deprecated `@dropdown-caret-color` as of v3.1.0
-@dropdown-caret-color:           #000;
-
-
-//-- Z-index master list
-//
-// Warning: Avoid customizing these values. They're used for a bird's eye view
-// of components dependent on the z-axis and are designed to all work together.
-//
-// Note: These variables are not generated into the Customizer.
-
-@zindex-navbar:            1000;
-@zindex-dropdown:          1000;
-@zindex-popover:           1060;
-@zindex-tooltip:           1070;
-@zindex-navbar-fixed:      1030;
-@zindex-modal-background:  1040;
-@zindex-modal:             1050;
-
-
-//== Media queries breakpoints
-//
-//## Define the breakpoints at which your layout will change, adapting to different screen sizes.
-
-// Extra small screen / phone
-//** Deprecated `@screen-xs` as of v3.0.1
-@screen-xs:                  480px;
-//** Deprecated `@screen-xs-min` as of v3.2.0
-@screen-xs-min:              @screen-xs;
-//** Deprecated `@screen-phone` as of v3.0.1
-@screen-phone:               @screen-xs-min;
-
-// Small screen / tablet
-//** Deprecated `@screen-sm` as of v3.0.1
-@screen-sm:                  768px;
-@screen-sm-min:              @screen-sm;
-//** Deprecated `@screen-tablet` as of v3.0.1
-@screen-tablet:              @screen-sm-min;
-
-// Medium screen / desktop
-//** Deprecated `@screen-md` as of v3.0.1
-@screen-md:                  992px;
-@screen-md-min:              @screen-md;
-//** Deprecated `@screen-desktop` as of v3.0.1
-@screen-desktop:             @screen-md-min;
-
-// Large screen / wide desktop
-//** Deprecated `@screen-lg` as of v3.0.1
-@screen-lg:                  1200px;
-@screen-lg-min:              @screen-lg;
-//** Deprecated `@screen-lg-desktop` as of v3.0.1
-@screen-lg-desktop:          @screen-lg-min;
-
-// So media queries don't overlap when required, provide a maximum
-@screen-xs-max:              (@screen-sm-min - 1);
-@screen-sm-max:              (@screen-md-min - 1);
-@screen-md-max:              (@screen-lg-min - 1);
-
-
-//== Grid system
-//
-//## Define your custom responsive grid.
-
-//** Number of columns in the grid.
-@grid-columns:              12;
-//** Padding between columns. Gets divided in half for the left and right.
-@grid-gutter-width:         30px;
-// Navbar collapse
-//** Point at which the navbar becomes uncollapsed.
-@grid-float-breakpoint:     @screen-sm-min;
-//** Point at which the navbar begins collapsing.
-@grid-float-breakpoint-max: (@grid-float-breakpoint - 1);
-
-
-//== Container sizes
-//
-//## Define the maximum width of `.container` for different screen sizes.
-
-// Small screen / tablet
-@container-tablet:             (720px + @grid-gutter-width);
-//** For `@screen-sm-min` and up.
-@container-sm:                 @container-tablet;
-
-// Medium screen / desktop
-@container-desktop:            (940px + @grid-gutter-width);
-//** For `@screen-md-min` and up.
-@container-md:                 @container-desktop;
-
-// Large screen / wide desktop
-@container-large-desktop:      (1140px + @grid-gutter-width);
-//** For `@screen-lg-min` and up.
-@container-lg:                 @container-large-desktop;
-
-
-//== Navbar
-//
-//##
-
-// Basics of a navbar
-@navbar-height:                    50px;
-@navbar-margin-bottom:             @line-height-computed;
-@navbar-border-radius:             @border-radius-base;
-@navbar-padding-horizontal:        floor((@grid-gutter-width / 2));
-@navbar-padding-vertical:          ((@navbar-height - @line-height-computed) / 2);
-@navbar-collapse-max-height:       340px;
-
-@navbar-default-color:             #777;
-@navbar-default-bg:                #f8f8f8;
-@navbar-default-border:            darken(@navbar-default-bg, 6.5%);
-
-// Navbar links
-@navbar-default-link-color:                #777;
-@navbar-default-link-hover-color:          #333;
-@navbar-default-link-hover-bg:             transparent;
-@navbar-default-link-active-color:         #555;
-@navbar-default-link-active-bg:            darken(@navbar-default-bg, 6.5%);
-@navbar-default-link-disabled-color:       #ccc;
-@navbar-default-link-disabled-bg:          transparent;
-
-// Navbar brand label
-@navbar-default-brand-color:               @navbar-default-link-color;
-@navbar-default-brand-hover-color:         darken(@navbar-default-brand-color, 10%);
-@navbar-default-brand-hover-bg:            transparent;
-
-// Navbar toggle
-@navbar-default-toggle-hover-bg:           #ddd;
-@navbar-default-toggle-icon-bar-bg:        #888;
-@navbar-default-toggle-border-color:       #ddd;
-
-
-//=== Inverted navbar
-// Reset inverted navbar basics
-@navbar-inverse-color:                      lighten(@gray-light, 15%);
-@navbar-inverse-bg:                         #222;
-@navbar-inverse-border:                     darken(@navbar-inverse-bg, 10%);
-
-// Inverted navbar links
-@navbar-inverse-link-color:                 lighten(@gray-light, 15%);
-@navbar-inverse-link-hover-color:           #fff;
-@navbar-inverse-link-hover-bg:              transparent;
-@navbar-inverse-link-active-color:          @navbar-inverse-link-hover-color;
-@navbar-inverse-link-active-bg:             darken(@navbar-inverse-bg, 10%);
-@navbar-inverse-link-disabled-color:        #444;
-@navbar-inverse-link-disabled-bg:           transparent;
-
-// Inverted navbar brand label
-@navbar-inverse-brand-color:                @navbar-inverse-link-color;
-@navbar-inverse-brand-hover-color:          #fff;
-@navbar-inverse-brand-hover-bg:             transparent;
-
-// Inverted navbar toggle
-@navbar-inverse-toggle-hover-bg:            #333;
-@navbar-inverse-toggle-icon-bar-bg:         #fff;
-@navbar-inverse-toggle-border-color:        #333;
-
-
-//== Navs
-//
-//##
-
-//=== Shared nav styles
-@nav-link-padding:                          10px 15px;
-@nav-link-hover-bg:                         @gray-lighter;
-
-@nav-disabled-link-color:                   @gray-light;
-@nav-disabled-link-hover-color:             @gray-light;
-
-//== Tabs
-@nav-tabs-border-color:                     #ddd;
-
-@nav-tabs-link-hover-border-color:          @gray-lighter;
-
-@nav-tabs-active-link-hover-bg:             @body-bg;
-@nav-tabs-active-link-hover-color:          @gray;
-@nav-tabs-active-link-hover-border-color:   #ddd;
-
-@nav-tabs-justified-link-border-color:            #ddd;
-@nav-tabs-justified-active-link-border-color:     @body-bg;
-
-//== Pills
-@nav-pills-border-radius:                   @border-radius-base;
-@nav-pills-active-link-hover-bg:            @component-active-bg;
-@nav-pills-active-link-hover-color:         @component-active-color;
-
-
-//== Pagination
-//
-//##
-
-@pagination-color:                     @link-color;
-@pagination-bg:                        #fff;
-@pagination-border:                    #ddd;
-
-@pagination-hover-color:               @link-hover-color;
-@pagination-hover-bg:                  @gray-lighter;
-@pagination-hover-border:              #ddd;
-
-@pagination-active-color:              #fff;
-@pagination-active-bg:                 @brand-primary;
-@pagination-active-border:             @brand-primary;
-
-@pagination-disabled-color:            @gray-light;
-@pagination-disabled-bg:               #fff;
-@pagination-disabled-border:           #ddd;
-
-
-//== Pager
-//
-//##
-
-@pager-bg:                             @pagination-bg;
-@pager-border:                         @pagination-border;
-@pager-border-radius:                  15px;
-
-@pager-hover-bg:                       @pagination-hover-bg;
-
-@pager-active-bg:                      @pagination-active-bg;
-@pager-active-color:                   @pagination-active-color;
-
-@pager-disabled-color:                 @pagination-disabled-color;
-
-
-//== Jumbotron
-//
-//##
-
-@jumbotron-padding:              30px;
-@jumbotron-color:                inherit;
-@jumbotron-bg:                   @gray-lighter;
-@jumbotron-heading-color:        inherit;
-@jumbotron-font-size:            ceil((@font-size-base * 1.5));
-@jumbotron-heading-font-size:    ceil((@font-size-base * 4.5));
-
-
-//== Form states and alerts
-//
-//## Define colors for form feedback states and, by default, alerts.
-
-@state-success-text:             #3c763d;
-@state-success-bg:               #dff0d8;
-@state-success-border:           darken(spin(@state-success-bg, -10), 5%);
-
-@state-info-text:                #31708f;
-@state-info-bg:                  #d9edf7;
-@state-info-border:              darken(spin(@state-info-bg, -10), 7%);
-
-@state-warning-text:             #8a6d3b;
-@state-warning-bg:               #fcf8e3;
-@state-warning-border:           darken(spin(@state-warning-bg, -10), 5%);
-
-@state-danger-text:              #a94442;
-@state-danger-bg:                #f2dede;
-@state-danger-border:            darken(spin(@state-danger-bg, -10), 5%);
-
-
-//== Tooltips
-//
-//##
-
-//** Tooltip max width
-@tooltip-max-width:           200px;
-//** Tooltip text color
-@tooltip-color:               #fff;
-//** Tooltip background color
-@tooltip-bg:                  #000;
-@tooltip-opacity:             .9;
-
-//** Tooltip arrow width
-@tooltip-arrow-width:         5px;
-//** Tooltip arrow color
-@tooltip-arrow-color:         @tooltip-bg;
-
-
-//== Popovers
-//
-//##
-
-//** Popover body background color
-@popover-bg:                          #fff;
-//** Popover maximum width
-@popover-max-width:                   276px;
-//** Popover border color
-@popover-border-color:                rgba(0,0,0,.2);
-//** Popover fallback border color
-@popover-fallback-border-color:       #ccc;
-
-//** Popover title background color
-@popover-title-bg:                    darken(@popover-bg, 3%);
-
-//** Popover arrow width
-@popover-arrow-width:                 10px;
-//** Popover arrow color
-@popover-arrow-color:                 @popover-bg;
-
-//** Popover outer arrow width
-@popover-arrow-outer-width:           (@popover-arrow-width + 1);
-//** Popover outer arrow color
-@popover-arrow-outer-color:           fadein(@popover-border-color, 5%);
-//** Popover outer arrow fallback color
-@popover-arrow-outer-fallback-color:  darken(@popover-fallback-border-color, 20%);
-
-
-//== Labels
-//
-//##
-
-//** Default label background color
-@label-default-bg:            @gray-light;
-//** Primary label background color
-@label-primary-bg:            @brand-primary;
-//** Success label background color
-@label-success-bg:            @brand-success;
-//** Info label background color
-@label-info-bg:               @brand-info;
-//** Warning label background color
-@label-warning-bg:            @brand-warning;
-//** Danger label background color
-@label-danger-bg:             @brand-danger;
-
-//** Default label text color
-@label-color:                 #fff;
-//** Default text color of a linked label
-@label-link-hover-color:      #fff;
-
-
-//== Modals
-//
-//##
-
-//** Padding applied to the modal body
-@modal-inner-padding:         15px;
-
-//** Padding applied to the modal title
-@modal-title-padding:         15px;
-//** Modal title line-height
-@modal-title-line-height:     @line-height-base;
-
-//** Background color of modal content area
-@modal-content-bg:                             #fff;
-//** Modal content border color
-@modal-content-border-color:                   rgba(0,0,0,.2);
-//** Modal content border color **for IE8**
-@modal-content-fallback-border-color:          #999;
-
-//** Modal backdrop background color
-@modal-backdrop-bg:           #000;
-//** Modal backdrop opacity
-@modal-backdrop-opacity:      .5;
-//** Modal header border color
-@modal-header-border-color:   #e5e5e5;
-//** Modal footer border color
-@modal-footer-border-color:   @modal-header-border-color;
-
-@modal-lg:                    900px;
-@modal-md:                    600px;
-@modal-sm:                    300px;
-
-
-//== Alerts
-//
-//## Define alert colors, border radius, and padding.
-
-@alert-padding:               15px;
-@alert-border-radius:         @border-radius-base;
-@alert-link-font-weight:      bold;
-
-@alert-success-bg:            @state-success-bg;
-@alert-success-text:          @state-success-text;
-@alert-success-border:        @state-success-border;
-
-@alert-info-bg:               @state-info-bg;
-@alert-info-text:             @state-info-text;
-@alert-info-border:           @state-info-border;
-
-@alert-warning-bg:            @state-warning-bg;
-@alert-warning-text:          @state-warning-text;
-@alert-warning-border:        @state-warning-border;
-
-@alert-danger-bg:             @state-danger-bg;
-@alert-danger-text:           @state-danger-text;
-@alert-danger-border:         @state-danger-border;
-
-
-//== Progress bars
-//
-//##
-
-//** Background color of the whole progress component
-@progress-bg:                 #f5f5f5;
-//** Progress bar text color
-@progress-bar-color:          #fff;
-//** Variable for setting rounded corners on progress bar.
-@progress-border-radius:      @border-radius-base;
-
-//** Default progress bar color
-@progress-bar-bg:             @brand-primary;
-//** Success progress bar color
-@progress-bar-success-bg:     @brand-success;
-//** Warning progress bar color
-@progress-bar-warning-bg:     @brand-warning;
-//** Danger progress bar color
-@progress-bar-danger-bg:      @brand-danger;
-//** Info progress bar color
-@progress-bar-info-bg:        @brand-info;
-
-
-//== List group
-//
-//##
-
-//** Background color on `.list-group-item`
-@list-group-bg:                 #fff;
-//** `.list-group-item` border color
-@list-group-border:             #ddd;
-//** List group border radius
-@list-group-border-radius:      @border-radius-base;
-
-//** Background color of single list items on hover
-@list-group-hover-bg:           #f5f5f5;
-//** Text color of active list items
-@list-group-active-color:       @component-active-color;
-//** Background color of active list items
-@list-group-active-bg:          @component-active-bg;
-//** Border color of active list elements
-@list-group-active-border:      @list-group-active-bg;
-//** Text color for content within active list items
-@list-group-active-text-color:  lighten(@list-group-active-bg, 40%);
-
-//** Text color of disabled list items
-@list-group-disabled-color:      @gray-light;
-//** Background color of disabled list items
-@list-group-disabled-bg:         @gray-lighter;
-//** Text color for content within disabled list items
-@list-group-disabled-text-color: @list-group-disabled-color;
-
-@list-group-link-color:         #555;
-@list-group-link-hover-color:   @list-group-link-color;
-@list-group-link-heading-color: #333;
-
-
-//== Panels
-//
-//##
-
-@panel-bg:                    #fff;
-@panel-body-padding:          15px;
-@panel-heading-padding:       10px 15px;
-@panel-footer-padding:        @panel-heading-padding;
-@panel-border-radius:         @border-radius-base;
-
-//** Border color for elements within panels
-@panel-inner-border:          #ddd;
-@panel-footer-bg:             #f5f5f5;
-
-@panel-default-text:          @gray-dark;
-@panel-default-border:        #ddd;
-@panel-default-heading-bg:    #f5f5f5;
-
-@panel-primary-text:          #fff;
-@panel-primary-border:        @brand-primary;
-@panel-primary-heading-bg:    @brand-primary;
-
-@panel-success-text:          @state-success-text;
-@panel-success-border:        @state-success-border;
-@panel-success-heading-bg:    @state-success-bg;
-
-@panel-info-text:             @state-info-text;
-@panel-info-border:           @state-info-border;
-@panel-info-heading-bg:       @state-info-bg;
-
-@panel-warning-text:          @state-warning-text;
-@panel-warning-border:        @state-warning-border;
-@panel-warning-heading-bg:    @state-warning-bg;
-
-@panel-danger-text:           @state-danger-text;
-@panel-danger-border:         @state-danger-border;
-@panel-danger-heading-bg:     @state-danger-bg;
-
-
-//== Thumbnails
-//
-//##
-
-//** Padding around the thumbnail image
-@thumbnail-padding:           4px;
-//** Thumbnail background color
-@thumbnail-bg:                @body-bg;
-//** Thumbnail border color
-@thumbnail-border:            #ddd;
-//** Thumbnail border radius
-@thumbnail-border-radius:     @border-radius-base;
-
-//** Custom text color for thumbnail captions
-@thumbnail-caption-color:     @text-color;
-//** Padding around the thumbnail caption
-@thumbnail-caption-padding:   9px;
-
-
-//== Wells
-//
-//##
-
-@well-bg:                     #f5f5f5;
-@well-border:                 darken(@well-bg, 7%);
-
-
-//== Badges
-//
-//##
-
-@badge-color:                 #fff;
-//** Linked badge text color on hover
-@badge-link-hover-color:      #fff;
-@badge-bg:                    @gray-light;
-
-//** Badge text color in active nav link
-@badge-active-color:          @link-color;
-//** Badge background color in active nav link
-@badge-active-bg:             #fff;
-
-@badge-font-weight:           bold;
-@badge-line-height:           1;
-@badge-border-radius:         10px;
-
-
-//== Breadcrumbs
-//
-//##
-
-@breadcrumb-padding-vertical:   8px;
-@breadcrumb-padding-horizontal: 15px;
-//** Breadcrumb background color
-@breadcrumb-bg:                 #f5f5f5;
-//** Breadcrumb text color
-@breadcrumb-color:              #ccc;
-//** Text color of current page in the breadcrumb
-@breadcrumb-active-color:       @gray-light;
-//** Textual separator for between breadcrumb elements
-@breadcrumb-separator:          "/";
-
-
-//== Carousel
-//
-//##
-
-@carousel-text-shadow:                        0 1px 2px rgba(0,0,0,.6);
-
-@carousel-control-color:                      #fff;
-@carousel-control-width:                      15%;
-@carousel-control-opacity:                    .5;
-@carousel-control-font-size:                  20px;
-
-@carousel-indicator-active-bg:                #fff;
-@carousel-indicator-border-color:             #fff;
-
-@carousel-caption-color:                      #fff;
-
-
-//== Close
-//
-//##
-
-@close-font-weight:           bold;
-@close-color:                 #000;
-@close-text-shadow:           0 1px 0 #fff;
-
-
-//== Code
-//
-//##
-
-@code-color:                  #c7254e;
-@code-bg:                     #f9f2f4;
-
-@kbd-color:                   #fff;
-@kbd-bg:                      #333;
-
-@pre-bg:                      #f5f5f5;
-@pre-color:                   @gray-dark;
-@pre-border-color:            #ccc;
-@pre-scrollable-max-height:   340px;
-
-
-//== Type
-//
-//##
-
-//** Horizontal offset for forms and lists.
-@component-offset-horizontal: 180px;
-//** Text muted color
-@text-muted:                  @gray-light;
-//** Abbreviations and acronyms border color
-@abbr-border-color:           @gray-light;
-//** Headings small color
-@headings-small-color:        @gray-light;
-//** Blockquote small color
-@blockquote-small-color:      @gray-light;
-//** Blockquote font size
-@blockquote-font-size:        (@font-size-base * 1.25);
-//** Blockquote border color
-@blockquote-border-color:     @gray-lighter;
-//** Page header border color
-@page-header-border-color:    @gray-lighter;
-//** Width of horizontal description list titles
-@dl-horizontal-offset:        @component-offset-horizontal;
-//** Point at which .dl-horizontal becomes horizontal
-@dl-horizontal-breakpoint:    @grid-float-breakpoint;
-//** Horizontal line color.
-@hr-border:                   @gray-lighter;
diff --git a/addons/web/static/lib/bootstrap/scss/_bootstrap-compass.scss b/addons/web/static/lib/bootstrap/scss/_bootstrap-compass.scss
new file mode 100644
index 00000000000..8fbc3cda5e3
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/_bootstrap-compass.scss
@@ -0,0 +1,9 @@
+@function twbs-font-path($path) {
+  @return font-url($path, true);
+}
+
+@function twbs-image-path($path) {
+  @return image-url($path, true);
+}
+
+$bootstrap-sass-asset-helper: true;
diff --git a/addons/web/static/lib/bootstrap/scss/_bootstrap-mincer.scss b/addons/web/static/lib/bootstrap/scss/_bootstrap-mincer.scss
new file mode 100644
index 00000000000..0c4655e32d2
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/_bootstrap-mincer.scss
@@ -0,0 +1,19 @@
+// Mincer asset helper functions
+//
+// This must be imported into a .css.ejs.scss file.
+// Then, <% %>-interpolations will be parsed as strings by Sass, and evaluated by EJS after Sass compilation.
+
+
+@function twbs-font-path($path) {
+  // do something like following
+  // from "path/to/font.ext#suffix" to "<%- asset_path(path/to/font.ext)) + #suffix %>"
+  // from "path/to/font.ext?#suffix" to "<%- asset_path(path/to/font.ext)) + ?#suffix %>"
+  // or from "path/to/font.ext" just "<%- asset_path(path/to/font.ext)) %>"
+  @return "<%- asset_path("#{$path}".replace(/[#?].*$/, '')) + "#{$path}".replace(/(^[^#?]*)([#?]?.*$)/, '$2') %>";
+}
+
+@function twbs-image-path($file) {
+  @return "<%- asset_path("#{$file}") %>";
+}
+
+$bootstrap-sass-asset-helper: true;
diff --git a/addons/web/static/lib/bootstrap/scss/_bootstrap-sprockets.scss b/addons/web/static/lib/bootstrap/scss/_bootstrap-sprockets.scss
new file mode 100644
index 00000000000..9fffc1eb4b1
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/_bootstrap-sprockets.scss
@@ -0,0 +1,9 @@
+@function twbs-font-path($path) {
+  @return font-path($path);
+}
+
+@function twbs-image-path($path) {
+  @return image-path($path);
+}
+
+$bootstrap-sass-asset-helper: true;
diff --git a/addons/web/static/lib/bootstrap/scss/_bootstrap.scss b/addons/web/static/lib/bootstrap/scss/_bootstrap.scss
new file mode 100644
index 00000000000..e72d1def2a2
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/_bootstrap.scss
@@ -0,0 +1,56 @@
+/*!
+ * Bootstrap v3.3.7 (http://getbootstrap.com)
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+
+// Core variables and mixins
+@import "bootstrap/variables";
+@import "bootstrap/mixins";
+
+// Reset and dependencies
+@import "bootstrap/normalize";
+@import "bootstrap/print";
+@import "bootstrap/glyphicons";
+
+// Core CSS
+@import "bootstrap/scaffolding";
+@import "bootstrap/type";
+@import "bootstrap/code";
+@import "bootstrap/grid";
+@import "bootstrap/tables";
+@import "bootstrap/forms";
+@import "bootstrap/buttons";
+
+// Components
+@import "bootstrap/component-animations";
+@import "bootstrap/dropdowns";
+@import "bootstrap/button-groups";
+@import "bootstrap/input-groups";
+@import "bootstrap/navs";
+@import "bootstrap/navbar";
+@import "bootstrap/breadcrumbs";
+@import "bootstrap/pagination";
+@import "bootstrap/pager";
+@import "bootstrap/labels";
+@import "bootstrap/badges";
+@import "bootstrap/jumbotron";
+@import "bootstrap/thumbnails";
+@import "bootstrap/alerts";
+@import "bootstrap/progress-bars";
+@import "bootstrap/media";
+@import "bootstrap/list-group";
+@import "bootstrap/panels";
+@import "bootstrap/responsive-embed";
+@import "bootstrap/wells";
+@import "bootstrap/close";
+
+// Components w/ JavaScript
+@import "bootstrap/modals";
+@import "bootstrap/tooltip";
+@import "bootstrap/popovers";
+@import "bootstrap/carousel";
+
+// Utility classes
+@import "bootstrap/utilities";
+@import "bootstrap/responsive-utilities";
diff --git a/addons/web/static/lib/bootstrap/less/alerts.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_alerts.scss
index c4199db927e..7d1e1fddd15 100644
--- a/addons/web/static/lib/bootstrap/less/alerts.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_alerts.scss
@@ -7,21 +7,21 @@
 // -------------------------
 
 .alert {
-  padding: @alert-padding;
-  margin-bottom: @line-height-computed;
+  padding: $alert-padding;
+  margin-bottom: $line-height-computed;
   border: 1px solid transparent;
-  border-radius: @alert-border-radius;
+  border-radius: $alert-border-radius;
 
   // Headings for larger alerts
   h4 {
     margin-top: 0;
-    // Specified for the h4 to prevent conflicts of changing @headings-color
+    // Specified for the h4 to prevent conflicts of changing $headings-color
     color: inherit;
   }
 
   // Provide class for links that match alerts
   .alert-link {
-    font-weight: @alert-link-font-weight;
+    font-weight: $alert-link-font-weight;
   }
 
   // Improve alignment and spacing of inner content
@@ -41,7 +41,7 @@
 
 .alert-dismissable, // The misspelled .alert-dismissable was deprecated in 3.2.0.
 .alert-dismissible {
-  padding-right: (@alert-padding + 20);
+  padding-right: ($alert-padding + 20);
 
   // Adjust close link position
   .close {
@@ -57,17 +57,17 @@
 // Generate contextual modifier classes for colorizing the alert.
 
 .alert-success {
-  .alert-variant(@alert-success-bg; @alert-success-border; @alert-success-text);
+  @include alert-variant($alert-success-bg, $alert-success-border, $alert-success-text);
 }
 
 .alert-info {
-  .alert-variant(@alert-info-bg; @alert-info-border; @alert-info-text);
+  @include alert-variant($alert-info-bg, $alert-info-border, $alert-info-text);
 }
 
 .alert-warning {
-  .alert-variant(@alert-warning-bg; @alert-warning-border; @alert-warning-text);
+  @include alert-variant($alert-warning-bg, $alert-warning-border, $alert-warning-text);
 }
 
 .alert-danger {
-  .alert-variant(@alert-danger-bg; @alert-danger-border; @alert-danger-text);
+  @include alert-variant($alert-danger-bg, $alert-danger-border, $alert-danger-text);
 }
diff --git a/addons/web/static/lib/bootstrap/less/badges.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_badges.scss
index 6ee16dca413..70002e085b1 100644
--- a/addons/web/static/lib/bootstrap/less/badges.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_badges.scss
@@ -8,15 +8,15 @@
   display: inline-block;
   min-width: 10px;
   padding: 3px 7px;
-  font-size: @font-size-small;
-  font-weight: @badge-font-weight;
-  color: @badge-color;
-  line-height: @badge-line-height;
+  font-size: $font-size-small;
+  font-weight: $badge-font-weight;
+  color: $badge-color;
+  line-height: $badge-line-height;
   vertical-align: middle;
   white-space: nowrap;
   text-align: center;
-  background-color: @badge-bg;
-  border-radius: @badge-border-radius;
+  background-color: $badge-bg;
+  border-radius: $badge-border-radius;
 
   // Empty badges collapse automatically (not available in IE8)
   &:empty {
@@ -35,21 +35,13 @@
     padding: 1px 5px;
   }
 
-  // Hover state, but only for links
-  a& {
-    &:hover,
-    &:focus {
-      color: @badge-link-hover-color;
-      text-decoration: none;
-      cursor: pointer;
-    }
-  }
+  // [converter] extracted a& to a.badge
 
   // Account for badges in navs
   .list-group-item.active > &,
   .nav-pills > .active > a > & {
-    color: @badge-active-color;
-    background-color: @badge-active-bg;
+    color: $badge-active-color;
+    background-color: $badge-active-bg;
   }
 
   .list-group-item > & {
@@ -64,3 +56,13 @@
     margin-left: 3px;
   }
 }
+
+// Hover state, but only for links
+a.badge {
+  &:hover,
+  &:focus {
+    color: $badge-link-hover-color;
+    text-decoration: none;
+    cursor: pointer;
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_breadcrumbs.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_breadcrumbs.scss
new file mode 100644
index 00000000000..b61f0c731ca
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_breadcrumbs.scss
@@ -0,0 +1,28 @@
+//
+// Breadcrumbs
+// --------------------------------------------------
+
+
+.breadcrumb {
+  padding: $breadcrumb-padding-vertical $breadcrumb-padding-horizontal;
+  margin-bottom: $line-height-computed;
+  list-style: none;
+  background-color: $breadcrumb-bg;
+  border-radius: $border-radius-base;
+
+  > li {
+    display: inline-block;
+
+    + li:before {
+      // [converter] Workaround for https://github.com/sass/libsass/issues/1115
+      $nbsp: "\00a0";
+      content: "#{$breadcrumb-separator}#{$nbsp}"; // Unicode space added since inline-block means non-collapsing white-space
+      padding: 0 5px;
+      color: $breadcrumb-color;
+    }
+  }
+
+  > .active {
+    color: $breadcrumb-active-color;
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/less/button-groups.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_button-groups.scss
index 16db0c6135e..4b385f569c4 100644
--- a/addons/web/static/lib/bootstrap/less/button-groups.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_button-groups.scss
@@ -34,7 +34,7 @@
 // Optional: Group multiple button groups together for a toolbar
 .btn-toolbar {
   margin-left: -5px; // Offset the first child's margin
-  &:extend(.clearfix all);
+  @include clearfix;
 
   .btn,
   .btn-group,
@@ -56,13 +56,13 @@
 .btn-group > .btn:first-child {
   margin-left: 0;
   &:not(:last-child):not(.dropdown-toggle) {
-    .border-right-radius(0);
+    @include border-right-radius(0);
   }
 }
 // Need .dropdown-toggle since :last-child doesn't apply, given that a .dropdown-menu is used immediately after it
 .btn-group > .btn:last-child:not(:first-child),
 .btn-group > .dropdown-toggle:not(:first-child) {
-  .border-left-radius(0);
+  @include border-left-radius(0);
 }
 
 // Custom edits for including btn-groups within btn-groups (useful for including dropdown buttons within a btn-group)
@@ -75,11 +75,11 @@
 .btn-group > .btn-group:first-child:not(:last-child) {
   > .btn:last-child,
   > .dropdown-toggle {
-    .border-right-radius(0);
+    @include border-right-radius(0);
   }
 }
 .btn-group > .btn-group:last-child:not(:first-child) > .btn:first-child {
-  .border-left-radius(0);
+  @include border-left-radius(0);
 }
 
 // On active and open, don't show outline
@@ -93,9 +93,9 @@
 //
 // Remix the default button sizing classes into new ones for easier manipulation.
 
-.btn-group-xs > .btn { &:extend(.btn-xs); }
-.btn-group-sm > .btn { &:extend(.btn-sm); }
-.btn-group-lg > .btn { &:extend(.btn-lg); }
+.btn-group-xs > .btn { @extend .btn-xs; }
+.btn-group-sm > .btn { @extend .btn-sm; }
+.btn-group-lg > .btn { @extend .btn-lg; }
 
 
 // Split button dropdowns
@@ -114,11 +114,11 @@
 // The clickable button for toggling the menu
 // Remove the gradient and set the same inset shadow as the :active state
 .btn-group.open .dropdown-toggle {
-  .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+  @include box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
 
   // Show no shadow for `.btn-link` since it has no other button styles.
   &.btn-link {
-    .box-shadow(none);
+    @include box-shadow(none);
   }
 }
 
@@ -129,12 +129,12 @@
 }
 // Carets in other button sizes
 .btn-lg .caret {
-  border-width: @caret-width-large @caret-width-large 0;
+  border-width: $caret-width-large $caret-width-large 0;
   border-bottom-width: 0;
 }
 // Upside down carets for .dropup
 .dropup .btn-lg .caret {
-  border-width: 0 @caret-width-large @caret-width-large;
+  border-width: 0 $caret-width-large $caret-width-large;
 }
 
 
@@ -153,7 +153,7 @@
 
   // Clear floats so dropdown menus can be properly placed
   > .btn-group {
-    &:extend(.clearfix all);
+    @include clearfix;
     > .btn {
       float: none;
     }
@@ -173,12 +173,12 @@
     border-radius: 0;
   }
   &:first-child:not(:last-child) {
-    .border-top-radius(@btn-border-radius-base);
-    .border-bottom-radius(0);
+    @include border-top-radius($btn-border-radius-base);
+    @include border-bottom-radius(0);
   }
   &:last-child:not(:first-child) {
-    .border-top-radius(0);
-    .border-bottom-radius(@btn-border-radius-base);
+    @include border-top-radius(0);
+    @include border-bottom-radius($btn-border-radius-base);
   }
 }
 .btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn {
@@ -187,11 +187,11 @@
 .btn-group-vertical > .btn-group:first-child:not(:last-child) {
   > .btn:last-child,
   > .dropdown-toggle {
-    .border-bottom-radius(0);
+    @include border-bottom-radius(0);
   }
 }
 .btn-group-vertical > .btn-group:last-child:not(:first-child) > .btn:first-child {
-  .border-top-radius(0);
+  @include border-top-radius(0);
 }
 
 
diff --git a/addons/web/static/lib/bootstrap/less/buttons.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_buttons.scss
index 9cbb8f416fa..6452b709f10 100644
--- a/addons/web/static/lib/bootstrap/less/buttons.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_buttons.scss
@@ -9,7 +9,7 @@
 .btn {
   display: inline-block;
   margin-bottom: 0; // For input.btn
-  font-weight: @btn-font-weight;
+  font-weight: $btn-font-weight;
   text-align: center;
   vertical-align: middle;
   touch-action: manipulation;
@@ -17,22 +17,22 @@
   background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
   border: 1px solid transparent;
   white-space: nowrap;
-  .button-size(@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @btn-border-radius-base);
-  .user-select(none);
+  @include button-size($padding-base-vertical, $padding-base-horizontal, $font-size-base, $line-height-base, $btn-border-radius-base);
+  @include user-select(none);
 
   &,
   &:active,
   &.active {
     &:focus,
     &.focus {
-      .tab-focus();
+      @include tab-focus;
     }
   }
 
   &:hover,
   &:focus,
   &.focus {
-    color: @btn-default-color;
+    color: $btn-default-color;
     text-decoration: none;
   }
 
@@ -40,22 +40,24 @@
   &.active {
     outline: 0;
     background-image: none;
-    .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+    @include box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
   }
 
   &.disabled,
   &[disabled],
   fieldset[disabled] & {
-    cursor: @cursor-disabled;
-    .opacity(.65);
-    .box-shadow(none);
+    cursor: $cursor-disabled;
+    @include opacity(.65);
+    @include box-shadow(none);
   }
 
-  a& {
-    &.disabled,
-    fieldset[disabled] & {
-      pointer-events: none; // Future-proof disabling of clicks on `<a>` elements
-    }
+  // [converter] extracted a& to a.btn
+}
+
+a.btn {
+  &.disabled,
+  fieldset[disabled] & {
+    pointer-events: none; // Future-proof disabling of clicks on `<a>` elements
   }
 }
 
@@ -64,26 +66,26 @@
 // --------------------------------------------------
 
 .btn-default {
-  .button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);
+  @include button-variant($btn-default-color, $btn-default-bg, $btn-default-border);
 }
 .btn-primary {
-  .button-variant(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
+  @include button-variant($btn-primary-color, $btn-primary-bg, $btn-primary-border);
 }
 // Success appears as green
 .btn-success {
-  .button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
+  @include button-variant($btn-success-color, $btn-success-bg, $btn-success-border);
 }
 // Info appears as blue-green
 .btn-info {
-  .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
+  @include button-variant($btn-info-color, $btn-info-bg, $btn-info-border);
 }
 // Warning appears as orange
 .btn-warning {
-  .button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
+  @include button-variant($btn-warning-color, $btn-warning-bg, $btn-warning-border);
 }
 // Danger and error appear as red
 .btn-danger {
-  .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
+  @include button-variant($btn-danger-color, $btn-danger-bg, $btn-danger-border);
 }
 
 
@@ -92,7 +94,7 @@
 
 // Make a button look and behave like a link
 .btn-link {
-  color: @link-color;
+  color: $link-color;
   font-weight: normal;
   border-radius: 0;
 
@@ -102,7 +104,7 @@
   &[disabled],
   fieldset[disabled] & {
     background-color: transparent;
-    .box-shadow(none);
+    @include box-shadow(none);
   }
   &,
   &:hover,
@@ -112,15 +114,15 @@
   }
   &:hover,
   &:focus {
-    color: @link-hover-color;
-    text-decoration: @link-hover-decoration;
+    color: $link-hover-color;
+    text-decoration: $link-hover-decoration;
     background-color: transparent;
   }
   &[disabled],
   fieldset[disabled] & {
     &:hover,
     &:focus {
-      color: @btn-link-disabled-color;
+      color: $btn-link-disabled-color;
       text-decoration: none;
     }
   }
@@ -132,14 +134,14 @@
 
 .btn-lg {
   // line-height: ensure even-numbered height of button next to large input
-  .button-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @btn-border-radius-large);
+  @include button-size($padding-large-vertical, $padding-large-horizontal, $font-size-large, $line-height-large, $btn-border-radius-large);
 }
 .btn-sm {
   // line-height: ensure proper height of button next to small input
-  .button-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @btn-border-radius-small);
+  @include button-size($padding-small-vertical, $padding-small-horizontal, $font-size-small, $line-height-small, $btn-border-radius-small);
 }
 .btn-xs {
-  .button-size(@padding-xs-vertical; @padding-xs-horizontal; @font-size-small; @line-height-small; @btn-border-radius-small);
+  @include button-size($padding-xs-vertical, $padding-xs-horizontal, $font-size-small, $line-height-small, $btn-border-radius-small);
 }
 
 
diff --git a/addons/web/static/lib/bootstrap/less/carousel.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_carousel.scss
index 252011e9e25..753d881f455 100644
--- a/addons/web/static/lib/bootstrap/less/carousel.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_carousel.scss
@@ -16,35 +16,35 @@
   > .item {
     display: none;
     position: relative;
-    .transition(.6s ease-in-out left);
+    @include transition(.6s ease-in-out left);
 
     // Account for jankitude on images
     > img,
     > a > img {
-      &:extend(.img-responsive);
+      @include img-responsive;
       line-height: 1;
     }
 
     // WebKit CSS3 transforms for supported devices
     @media all and (transform-3d), (-webkit-transform-3d) {
-      .transition-transform(~'0.6s ease-in-out');
-      .backface-visibility(~'hidden');
-      .perspective(1000px);
+      @include transition-transform(0.6s ease-in-out);
+      @include backface-visibility(hidden);
+      @include perspective(1000px);
 
       &.next,
       &.active.right {
-        .translate3d(100%, 0, 0);
+        @include translate3d(100%, 0, 0);
         left: 0;
       }
       &.prev,
       &.active.left {
-        .translate3d(-100%, 0, 0);
+        @include translate3d(-100%, 0, 0);
         left: 0;
       }
       &.next.left,
       &.prev.right,
       &.active {
-        .translate3d(0, 0, 0);
+        @include translate3d(0, 0, 0);
         left: 0;
       }
     }
@@ -95,33 +95,33 @@
   top: 0;
   left: 0;
   bottom: 0;
-  width: @carousel-control-width;
-  .opacity(@carousel-control-opacity);
-  font-size: @carousel-control-font-size;
-  color: @carousel-control-color;
+  width: $carousel-control-width;
+  @include opacity($carousel-control-opacity);
+  font-size: $carousel-control-font-size;
+  color: $carousel-control-color;
   text-align: center;
-  text-shadow: @carousel-text-shadow;
+  text-shadow: $carousel-text-shadow;
   background-color: rgba(0, 0, 0, 0); // Fix IE9 click-thru bug
   // We can't have this transition here because WebKit cancels the carousel
   // animation if you trip this while in the middle of another animation.
 
   // Set gradients for backgrounds
   &.left {
-    #gradient > .horizontal(@start-color: rgba(0,0,0,.5); @end-color: rgba(0,0,0,.0001));
+    @include gradient-horizontal($start-color: rgba(0,0,0,.5), $end-color: rgba(0,0,0,.0001));
   }
   &.right {
     left: auto;
     right: 0;
-    #gradient > .horizontal(@start-color: rgba(0,0,0,.0001); @end-color: rgba(0,0,0,.5));
+    @include gradient-horizontal($start-color: rgba(0,0,0,.0001), $end-color: rgba(0,0,0,.5));
   }
 
   // Hover/focus state
   &:hover,
   &:focus {
     outline: 0;
-    color: @carousel-control-color;
+    color: $carousel-control-color;
     text-decoration: none;
-    .opacity(.9);
+    @include opacity(.9);
   }
 
   // Toggles
@@ -188,7 +188,7 @@
     height: 10px;
     margin: 1px;
     text-indent: -999px;
-    border: 1px solid @carousel-indicator-border-color;
+    border: 1px solid $carousel-indicator-border-color;
     border-radius: 10px;
     cursor: pointer;
 
@@ -208,7 +208,7 @@
     margin: 0;
     width:  12px;
     height: 12px;
-    background-color: @carousel-indicator-active-bg;
+    background-color: $carousel-indicator-active-bg;
   }
 }
 
@@ -223,9 +223,9 @@
   z-index: 10;
   padding-top: 20px;
   padding-bottom: 20px;
-  color: @carousel-caption-color;
+  color: $carousel-caption-color;
   text-align: center;
-  text-shadow: @carousel-text-shadow;
+  text-shadow: $carousel-text-shadow;
   & .btn {
     text-shadow: none; // No shadow for button elements in carousel-caption
   }
@@ -233,7 +233,7 @@
 
 
 // Scale up controls for tablets and up
-@media screen and (min-width: @screen-sm-min) {
+@media screen and (min-width: $screen-sm-min) {
 
   // Scale up the controls a smidge
   .carousel-control {
@@ -241,18 +241,18 @@
     .glyphicon-chevron-right,
     .icon-prev,
     .icon-next {
-      width: (@carousel-control-font-size * 1.5);
-      height: (@carousel-control-font-size * 1.5);
-      margin-top: (@carousel-control-font-size / -2);
-      font-size: (@carousel-control-font-size * 1.5);
+      width: ($carousel-control-font-size * 1.5);
+      height: ($carousel-control-font-size * 1.5);
+      margin-top: ($carousel-control-font-size / -2);
+      font-size: ($carousel-control-font-size * 1.5);
     }
     .glyphicon-chevron-left,
     .icon-prev {
-      margin-left: (@carousel-control-font-size / -2);
+      margin-left: ($carousel-control-font-size / -2);
     }
     .glyphicon-chevron-right,
     .icon-next {
-      margin-right: (@carousel-control-font-size / -2);
+      margin-right: ($carousel-control-font-size / -2);
     }
   }
 
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_close.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_close.scss
new file mode 100644
index 00000000000..3b74d8a973c
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_close.scss
@@ -0,0 +1,36 @@
+//
+// Close icons
+// --------------------------------------------------
+
+
+.close {
+  float: right;
+  font-size: ($font-size-base * 1.5);
+  font-weight: $close-font-weight;
+  line-height: 1;
+  color: $close-color;
+  text-shadow: $close-text-shadow;
+  @include opacity(.2);
+
+  &:hover,
+  &:focus {
+    color: $close-color;
+    text-decoration: none;
+    cursor: pointer;
+    @include opacity(.5);
+  }
+
+  // [converter] extracted button& to button.close
+}
+
+// Additional properties for button version
+// iOS requires the button element instead of an anchor tag.
+// If you want the anchor version, it requires `href="#"`.
+// See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
+button.close {
+  padding: 0;
+  cursor: pointer;
+  background: transparent;
+  border: 0;
+  -webkit-appearance: none;
+}
diff --git a/addons/web/static/lib/bootstrap/less/code.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_code.scss
index a08b4d48c4c..caa5f06304c 100644
--- a/addons/web/static/lib/bootstrap/less/code.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_code.scss
@@ -8,25 +8,25 @@ code,
 kbd,
 pre,
 samp {
-  font-family: @font-family-monospace;
+  font-family: $font-family-monospace;
 }
 
 // Inline code
 code {
   padding: 2px 4px;
   font-size: 90%;
-  color: @code-color;
-  background-color: @code-bg;
-  border-radius: @border-radius-base;
+  color: $code-color;
+  background-color: $code-bg;
+  border-radius: $border-radius-base;
 }
 
 // User input typically entered via keyboard
 kbd {
   padding: 2px 4px;
   font-size: 90%;
-  color: @kbd-color;
-  background-color: @kbd-bg;
-  border-radius: @border-radius-small;
+  color: $kbd-color;
+  background-color: $kbd-bg;
+  border-radius: $border-radius-small;
   box-shadow: inset 0 -1px 0 rgba(0,0,0,.25);
 
   kbd {
@@ -40,16 +40,16 @@ kbd {
 // Blocks of code
 pre {
   display: block;
-  padding: ((@line-height-computed - 1) / 2);
-  margin: 0 0 (@line-height-computed / 2);
-  font-size: (@font-size-base - 1); // 14px to 13px
-  line-height: @line-height-base;
+  padding: (($line-height-computed - 1) / 2);
+  margin: 0 0 ($line-height-computed / 2);
+  font-size: ($font-size-base - 1); // 14px to 13px
+  line-height: $line-height-base;
   word-break: break-all;
   word-wrap: break-word;
-  color: @pre-color;
-  background-color: @pre-bg;
-  border: 1px solid @pre-border-color;
-  border-radius: @border-radius-base;
+  color: $pre-color;
+  background-color: $pre-bg;
+  border: 1px solid $pre-border-color;
+  border-radius: $border-radius-base;
 
   // Account for some code outputs that place code tags in pre tags
   code {
@@ -64,6 +64,6 @@ pre {
 
 // Enable scrollable blocks of code
 .pre-scrollable {
-  max-height: @pre-scrollable-max-height;
+  max-height: $pre-scrollable-max-height;
   overflow-y: scroll;
 }
diff --git a/addons/web/static/lib/bootstrap/less/component-animations.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_component-animations.scss
index 0bcee910ac5..ca3b43ca788 100644
--- a/addons/web/static/lib/bootstrap/less/component-animations.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_component-animations.scss
@@ -9,7 +9,7 @@
 
 .fade {
   opacity: 0;
-  .transition(opacity .15s linear);
+  @include transition(opacity .15s linear);
   &.in {
     opacity: 1;
   }
@@ -19,15 +19,19 @@
   display: none;
 
   &.in      { display: block; }
-  tr&.in    { display: table-row; }
-  tbody&.in { display: table-row-group; }
+  // [converter] extracted tr&.in to tr.collapse.in
+  // [converter] extracted tbody&.in to tbody.collapse.in
 }
 
+tr.collapse.in    { display: table-row; }
+
+tbody.collapse.in { display: table-row-group; }
+
 .collapsing {
   position: relative;
   height: 0;
   overflow: hidden;
-  .transition-property(~"height, visibility");
-  .transition-duration(.35s);
-  .transition-timing-function(ease);
+  @include transition-property(height, visibility);
+  @include transition-duration(.35s);
+  @include transition-timing-function(ease);
 }
diff --git a/addons/web/static/lib/bootstrap/less/dropdowns.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_dropdowns.scss
index f6876c1a9b2..aac84597a49 100644
--- a/addons/web/static/lib/bootstrap/less/dropdowns.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_dropdowns.scss
@@ -10,10 +10,10 @@
   height: 0;
   margin-left: 2px;
   vertical-align: middle;
-  border-top:   @caret-width-base dashed;
-  border-top:   @caret-width-base solid ~"\9"; // IE8
-  border-right: @caret-width-base solid transparent;
-  border-left:  @caret-width-base solid transparent;
+  border-top:   $caret-width-base dashed;
+  border-top:   $caret-width-base solid \9; // IE8
+  border-right: $caret-width-base solid transparent;
+  border-left:  $caret-width-base solid transparent;
 }
 
 // The dropdown wrapper (div)
@@ -32,20 +32,20 @@
   position: absolute;
   top: 100%;
   left: 0;
-  z-index: @zindex-dropdown;
+  z-index: $zindex-dropdown;
   display: none; // none by default, but block on "open" of the menu
   float: left;
   min-width: 160px;
   padding: 5px 0;
   margin: 2px 0 0; // override default ul
   list-style: none;
-  font-size: @font-size-base;
+  font-size: $font-size-base;
   text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)
-  background-color: @dropdown-bg;
-  border: 1px solid @dropdown-fallback-border; // IE8 fallback
-  border: 1px solid @dropdown-border;
-  border-radius: @border-radius-base;
-  .box-shadow(0 6px 12px rgba(0,0,0,.175));
+  background-color: $dropdown-bg;
+  border: 1px solid $dropdown-fallback-border; // IE8 fallback
+  border: 1px solid $dropdown-border;
+  border-radius: $border-radius-base;
+  @include box-shadow(0 6px 12px rgba(0,0,0,.175));
   background-clip: padding-box;
 
   // Aligns the dropdown menu to right
@@ -58,7 +58,7 @@
 
   // Dividers (basically an hr) within the dropdown
   .divider {
-    .nav-divider(@dropdown-divider-bg);
+    @include nav-divider($dropdown-divider-bg);
   }
 
   // Links within the dropdown menu
@@ -67,8 +67,8 @@
     padding: 3px 20px;
     clear: both;
     font-weight: normal;
-    line-height: @line-height-base;
-    color: @dropdown-link-color;
+    line-height: $line-height-base;
+    color: $dropdown-link-color;
     white-space: nowrap; // prevent links from randomly breaking onto new lines
   }
 }
@@ -78,8 +78,8 @@
   &:hover,
   &:focus {
     text-decoration: none;
-    color: @dropdown-link-hover-color;
-    background-color: @dropdown-link-hover-bg;
+    color: $dropdown-link-hover-color;
+    background-color: $dropdown-link-hover-bg;
   }
 }
 
@@ -88,10 +88,10 @@
   &,
   &:hover,
   &:focus {
-    color: @dropdown-link-active-color;
+    color: $dropdown-link-active-color;
     text-decoration: none;
     outline: 0;
-    background-color: @dropdown-link-active-bg;
+    background-color: $dropdown-link-active-bg;
   }
 }
 
@@ -103,7 +103,7 @@
   &,
   &:hover,
   &:focus {
-    color: @dropdown-link-disabled-color;
+    color: $dropdown-link-disabled-color;
   }
 
   // Nuke hover/focus effects
@@ -112,8 +112,8 @@
     text-decoration: none;
     background-color: transparent;
     background-image: none; // Remove CSS gradient
-    .reset-filter();
-    cursor: @cursor-disabled;
+    @include reset-filter;
+    cursor: $cursor-disabled;
   }
 }
 
@@ -153,9 +153,9 @@
 .dropdown-header {
   display: block;
   padding: 3px 20px;
-  font-size: @font-size-small;
-  line-height: @line-height-base;
-  color: @dropdown-header-color;
+  font-size: $font-size-small;
+  line-height: $line-height-base;
+  color: $dropdown-header-color;
   white-space: nowrap; // as with > li > a
 }
 
@@ -166,7 +166,7 @@
   right: 0;
   bottom: 0;
   top: 0;
-  z-index: (@zindex-dropdown - 10);
+  z-index: ($zindex-dropdown - 10);
 }
 
 // Right aligned dropdowns
@@ -185,8 +185,8 @@
   // Reverse the caret
   .caret {
     border-top: 0;
-    border-bottom: @caret-width-base dashed;
-    border-bottom: @caret-width-base solid ~"\9"; // IE8
+    border-bottom: $caret-width-base dashed;
+    border-bottom: $caret-width-base solid \9; // IE8
     content: "";
   }
   // Different positioning for bottom up menu
@@ -202,15 +202,15 @@
 //
 // Reiterate per navbar.less and the modified component alignment there.
 
-@media (min-width: @grid-float-breakpoint) {
+@media (min-width: $grid-float-breakpoint) {
   .navbar-right {
     .dropdown-menu {
-      .dropdown-menu-right();
+      right: 0; left: auto;
     }
     // Necessary for overrides of the default right aligned menu.
     // Will remove come v4 in all likelihood.
     .dropdown-menu-left {
-      .dropdown-menu-left();
+      left: 0; right: auto;
     }
   }
 }
diff --git a/addons/web/static/lib/bootstrap/less/forms.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_forms.scss
index 9377d3846b9..ac26a6ad86b 100644
--- a/addons/web/static/lib/bootstrap/less/forms.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_forms.scss
@@ -21,12 +21,12 @@ legend {
   display: block;
   width: 100%;
   padding: 0;
-  margin-bottom: @line-height-computed;
-  font-size: (@font-size-base * 1.5);
+  margin-bottom: $line-height-computed;
+  font-size: ($font-size-base * 1.5);
   line-height: inherit;
-  color: @legend-color;
+  color: $legend-color;
   border: 0;
-  border-bottom: 1px solid @legend-border-color;
+  border-bottom: 1px solid $legend-border-color;
 }
 
 label {
@@ -45,7 +45,7 @@ label {
 
 // Override content-box in Normalize (* isn't specific enough)
 input[type="search"] {
-  .box-sizing(border-box);
+  @include box-sizing(border-box);
 }
 
 // Position radios and checkboxes better
@@ -76,16 +76,16 @@ select[size] {
 input[type="file"]:focus,
 input[type="radio"]:focus,
 input[type="checkbox"]:focus {
-  .tab-focus();
+  @include tab-focus;
 }
 
 // Adjust output element
 output {
   display: block;
-  padding-top: (@padding-base-vertical + 1);
-  font-size: @font-size-base;
-  line-height: @line-height-base;
-  color: @input-color;
+  padding-top: ($padding-base-vertical + 1);
+  font-size: $font-size-base;
+  line-height: $line-height-base;
+  color: $input-color;
 }
 
 
@@ -114,23 +114,23 @@ output {
 .form-control {
   display: block;
   width: 100%;
-  height: @input-height-base; // Make inputs at least the height of their button counterpart (base line-height + padding + border)
-  padding: @padding-base-vertical @padding-base-horizontal;
-  font-size: @font-size-base;
-  line-height: @line-height-base;
-  color: @input-color;
-  background-color: @input-bg;
+  height: $input-height-base; // Make inputs at least the height of their button counterpart (base line-height + padding + border)
+  padding: $padding-base-vertical $padding-base-horizontal;
+  font-size: $font-size-base;
+  line-height: $line-height-base;
+  color: $input-color;
+  background-color: $input-bg;
   background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
-  border: 1px solid @input-border;
-  border-radius: @input-border-radius; // Note: This has no effect on <select>s in some browsers, due to the limited stylability of <select>s in CSS.
-  .box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
-  .transition(~"border-color ease-in-out .15s, box-shadow ease-in-out .15s");
+  border: 1px solid $input-border;
+  border-radius: $input-border-radius; // Note: This has no effect on <select>s in some browsers, due to the limited stylability of <select>s in CSS.
+  @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
+  @include transition(border-color ease-in-out .15s, box-shadow ease-in-out .15s);
 
   // Customize the `:focus` state to imitate native WebKit styles.
-  .form-control-focus();
+  @include form-control-focus;
 
   // Placeholder
-  .placeholder();
+  @include placeholder;
 
   // Unstyle the caret on `<select>`s in IE10+.
   &::-ms-expand {
@@ -146,19 +146,21 @@ output {
   &[disabled],
   &[readonly],
   fieldset[disabled] & {
-    background-color: @input-bg-disabled;
+    background-color: $input-bg-disabled;
     opacity: 1; // iOS fix for unreadable disabled content; see https://github.com/twbs/bootstrap/issues/11655
   }
 
   &[disabled],
   fieldset[disabled] & {
-    cursor: @cursor-disabled;
+    cursor: $cursor-disabled;
   }
 
-  // Reset height for `textarea`s
-  textarea& {
-    height: auto;
-  }
+  // [converter] extracted textarea& to textarea.form-control
+}
+
+// Reset height for `textarea`s
+textarea.form-control {
+  height: auto;
 }
 
 
@@ -189,17 +191,17 @@ input[type="search"] {
   input[type="datetime-local"],
   input[type="month"] {
     &.form-control {
-      line-height: @input-height-base;
+      line-height: $input-height-base;
     }
 
     &.input-sm,
     .input-group-sm & {
-      line-height: @input-height-small;
+      line-height: $input-height-small;
     }
 
     &.input-lg,
     .input-group-lg & {
-      line-height: @input-height-large;
+      line-height: $input-height-large;
     }
   }
 }
@@ -211,7 +213,7 @@ input[type="search"] {
 // horizontal forms, use the predefined grid classes.
 
 .form-group {
-  margin-bottom: @form-group-margin-bottom;
+  margin-bottom: $form-group-margin-bottom;
 }
 
 
@@ -227,7 +229,7 @@ input[type="search"] {
   margin-bottom: 10px;
 
   label {
-    min-height: @line-height-computed; // Ensure the input doesn't jump when there is no text
+    min-height: $line-height-computed; // Ensure the input doesn't jump when there is no text
     padding-left: 20px;
     margin-bottom: 0;
     font-weight: normal;
@@ -274,7 +276,7 @@ input[type="checkbox"] {
   &[disabled],
   &.disabled,
   fieldset[disabled] & {
-    cursor: @cursor-disabled;
+    cursor: $cursor-disabled;
   }
 }
 // These classes are used directly on <label>s
@@ -282,7 +284,7 @@ input[type="checkbox"] {
 .checkbox-inline {
   &.disabled,
   fieldset[disabled] & {
-    cursor: @cursor-disabled;
+    cursor: $cursor-disabled;
   }
 }
 // These classes are used on elements with <label> descendants
@@ -291,7 +293,7 @@ input[type="checkbox"] {
   &.disabled,
   fieldset[disabled] & {
     label {
-      cursor: @cursor-disabled;
+      cursor: $cursor-disabled;
     }
   }
 }
@@ -304,11 +306,11 @@ input[type="checkbox"] {
 
 .form-control-static {
   // Size it appropriately next to real form controls
-  padding-top: (@padding-base-vertical + 1);
-  padding-bottom: (@padding-base-vertical + 1);
+  padding-top: ($padding-base-vertical + 1);
+  padding-bottom: ($padding-base-vertical + 1);
   // Remove default margin from `p`
   margin-bottom: 0;
-  min-height: (@line-height-computed + @font-size-base);
+  min-height: ($line-height-computed + $font-size-base);
 
   &.input-lg,
   &.input-sm {
@@ -326,59 +328,55 @@ input[type="checkbox"] {
 // The `.form-group-* form-control` variations are sadly duplicated to avoid the
 // issue documented in https://github.com/twbs/bootstrap/issues/15074.
 
-.input-sm {
-  .input-size(@input-height-small; @padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @input-border-radius-small);
-}
+@include input-size('.input-sm', $input-height-small, $padding-small-vertical, $padding-small-horizontal, $font-size-small, $line-height-small, $input-border-radius-small);
 .form-group-sm {
   .form-control {
-    height: @input-height-small;
-    padding: @padding-small-vertical @padding-small-horizontal;
-    font-size: @font-size-small;
-    line-height: @line-height-small;
-    border-radius: @input-border-radius-small;
+    height: $input-height-small;
+    padding: $padding-small-vertical $padding-small-horizontal;
+    font-size: $font-size-small;
+    line-height: $line-height-small;
+    border-radius: $input-border-radius-small;
   }
   select.form-control {
-    height: @input-height-small;
-    line-height: @input-height-small;
+    height: $input-height-small;
+    line-height: $input-height-small;
   }
   textarea.form-control,
   select[multiple].form-control {
     height: auto;
   }
   .form-control-static {
-    height: @input-height-small;
-    min-height: (@line-height-computed + @font-size-small);
-    padding: (@padding-small-vertical + 1) @padding-small-horizontal;
-    font-size: @font-size-small;
-    line-height: @line-height-small;
+    height: $input-height-small;
+    min-height: ($line-height-computed + $font-size-small);
+    padding: ($padding-small-vertical + 1) $padding-small-horizontal;
+    font-size: $font-size-small;
+    line-height: $line-height-small;
   }
 }
 
-.input-lg {
-  .input-size(@input-height-large; @padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @input-border-radius-large);
-}
+@include input-size('.input-lg', $input-height-large, $padding-large-vertical, $padding-large-horizontal, $font-size-large, $line-height-large, $input-border-radius-large);
 .form-group-lg {
   .form-control {
-    height: @input-height-large;
-    padding: @padding-large-vertical @padding-large-horizontal;
-    font-size: @font-size-large;
-    line-height: @line-height-large;
-    border-radius: @input-border-radius-large;
+    height: $input-height-large;
+    padding: $padding-large-vertical $padding-large-horizontal;
+    font-size: $font-size-large;
+    line-height: $line-height-large;
+    border-radius: $input-border-radius-large;
   }
   select.form-control {
-    height: @input-height-large;
-    line-height: @input-height-large;
+    height: $input-height-large;
+    line-height: $input-height-large;
   }
   textarea.form-control,
   select[multiple].form-control {
     height: auto;
   }
   .form-control-static {
-    height: @input-height-large;
-    min-height: (@line-height-computed + @font-size-large);
-    padding: (@padding-large-vertical + 1) @padding-large-horizontal;
-    font-size: @font-size-large;
-    line-height: @line-height-large;
+    height: $input-height-large;
+    min-height: ($line-height-computed + $font-size-large);
+    padding: ($padding-large-vertical + 1) $padding-large-horizontal;
+    font-size: $font-size-large;
+    line-height: $line-height-large;
   }
 }
 
@@ -393,7 +391,7 @@ input[type="checkbox"] {
 
   // Ensure icons don't overlap text
   .form-control {
-    padding-right: (@input-height-base * 1.25);
+    padding-right: ($input-height-base * 1.25);
   }
 }
 // Feedback icon (requires .glyphicon classes)
@@ -403,43 +401,43 @@ input[type="checkbox"] {
   right: 0;
   z-index: 2; // Ensure icon is above input groups
   display: block;
-  width: @input-height-base;
-  height: @input-height-base;
-  line-height: @input-height-base;
+  width: $input-height-base;
+  height: $input-height-base;
+  line-height: $input-height-base;
   text-align: center;
   pointer-events: none;
 }
 .input-lg + .form-control-feedback,
 .input-group-lg + .form-control-feedback,
 .form-group-lg .form-control + .form-control-feedback {
-  width: @input-height-large;
-  height: @input-height-large;
-  line-height: @input-height-large;
+  width: $input-height-large;
+  height: $input-height-large;
+  line-height: $input-height-large;
 }
 .input-sm + .form-control-feedback,
 .input-group-sm + .form-control-feedback,
 .form-group-sm .form-control + .form-control-feedback {
-  width: @input-height-small;
-  height: @input-height-small;
-  line-height: @input-height-small;
+  width: $input-height-small;
+  height: $input-height-small;
+  line-height: $input-height-small;
 }
 
 // Feedback states
 .has-success {
-  .form-control-validation(@state-success-text; @state-success-text; @state-success-bg);
+  @include form-control-validation($state-success-text, $state-success-text, $state-success-bg);
 }
 .has-warning {
-  .form-control-validation(@state-warning-text; @state-warning-text; @state-warning-bg);
+  @include form-control-validation($state-warning-text, $state-warning-text, $state-warning-bg);
 }
 .has-error {
-  .form-control-validation(@state-danger-text; @state-danger-text; @state-danger-bg);
+  @include form-control-validation($state-danger-text, $state-danger-text, $state-danger-bg);
 }
 
 // Reposition feedback icon if input has visible label above
 .has-feedback label {
 
   & ~ .form-control-feedback {
-    top: (@line-height-computed + 5); // Height of the `label` and its margin
+    top: ($line-height-computed + 5); // Height of the `label` and its margin
   }
   &.sr-only ~ .form-control-feedback {
     top: 0;
@@ -456,7 +454,7 @@ input[type="checkbox"] {
   display: block; // account for any element using help-block
   margin-top: 5px;
   margin-bottom: 10px;
-  color: lighten(@text-color, 25%); // lighten the text some for contrast
+  color: lighten($text-color, 25%); // lighten the text some for contrast
 }
 
 
@@ -471,10 +469,11 @@ input[type="checkbox"] {
 //
 // Heads up! This is mixin-ed into `.navbar-form` in navbars.less.
 
-.form-inline {
+// [converter] extracted from `.form-inline` for libsass compatibility
+@mixin form-inline {
 
   // Kick in the inline
-  @media (min-width: @screen-sm-min) {
+  @media (min-width: $screen-sm-min) {
     // Inline-block all the things for "inline"
     .form-group {
       display: inline-block;
@@ -540,6 +539,11 @@ input[type="checkbox"] {
     }
   }
 }
+// [converter] extracted as `@mixin form-inline` for libsass compatibility
+.form-inline {
+  @include form-inline;
+}
+
 
 
 // Horizontal forms
@@ -558,27 +562,27 @@ input[type="checkbox"] {
   .checkbox-inline {
     margin-top: 0;
     margin-bottom: 0;
-    padding-top: (@padding-base-vertical + 1); // Default padding plus a border
+    padding-top: ($padding-base-vertical + 1); // Default padding plus a border
   }
   // Account for padding we're adding to ensure the alignment and of help text
   // and other content below items
   .radio,
   .checkbox {
-    min-height: (@line-height-computed + (@padding-base-vertical + 1));
+    min-height: ($line-height-computed + ($padding-base-vertical + 1));
   }
 
   // Make form groups behave like rows
   .form-group {
-    .make-row();
+    @include make-row;
   }
 
   // Reset spacing and right align labels, but scope to media queries so that
   // labels on narrow viewports stack the same as a default form example.
-  @media (min-width: @screen-sm-min) {
+  @media (min-width: $screen-sm-min) {
     .control-label {
       text-align: right;
       margin-bottom: 0;
-      padding-top: (@padding-base-vertical + 1); // Default padding plus a border
+      padding-top: ($padding-base-vertical + 1); // Default padding plus a border
     }
   }
 
@@ -587,7 +591,7 @@ input[type="checkbox"] {
   // Reposition the icon because it's now within a grid column and columns have
   // `position: relative;` on them. Also accounts for the grid gutter padding.
   .has-feedback .form-control-feedback {
-    right: floor((@grid-gutter-width / 2));
+    right: floor(($grid-gutter-width / 2));
   }
 
   // Form group sizes
@@ -595,18 +599,18 @@ input[type="checkbox"] {
   // Quick utility class for applying `.input-lg` and `.input-sm` styles to the
   // inputs and labels within a `.form-group`.
   .form-group-lg {
-    @media (min-width: @screen-sm-min) {
+    @media (min-width: $screen-sm-min) {
       .control-label {
-        padding-top: (@padding-large-vertical + 1);
-        font-size: @font-size-large;
+        padding-top: ($padding-large-vertical + 1);
+        font-size: $font-size-large;
       }
     }
   }
   .form-group-sm {
-    @media (min-width: @screen-sm-min) {
+    @media (min-width: $screen-sm-min) {
       .control-label {
-        padding-top: (@padding-small-vertical + 1);
-        font-size: @font-size-small;
+        padding-top: ($padding-small-vertical + 1);
+        font-size: $font-size-small;
       }
     }
   }
diff --git a/addons/web/static/lib/bootstrap/less/glyphicons.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_glyphicons.scss
index 7bc5852d2c0..07a0fc91fe6 100644
--- a/addons/web/static/lib/bootstrap/less/glyphicons.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_glyphicons.scss
@@ -7,15 +7,17 @@
 //
 // <a href="#"><span class="glyphicon glyphicon-star"></span> Star</a>
 
-// Import the fonts
-@font-face {
-  font-family: 'Glyphicons Halflings';
-  src: url('@{icon-font-path}@{icon-font-name}.eot');
-  src: url('@{icon-font-path}@{icon-font-name}.eot?#iefix') format('embedded-opentype'),
-       url('@{icon-font-path}@{icon-font-name}.woff2') format('woff2'),
-       url('@{icon-font-path}@{icon-font-name}.woff') format('woff'),
-       url('@{icon-font-path}@{icon-font-name}.ttf') format('truetype'),
-       url('@{icon-font-path}@{icon-font-name}.svg#@{icon-font-svg-id}') format('svg');
+@at-root {
+  // Import the fonts
+  @font-face {
+    font-family: 'Glyphicons Halflings';
+    src: url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.eot'), '#{$icon-font-path}#{$icon-font-name}.eot'));
+    src: url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.eot?#iefix'), '#{$icon-font-path}#{$icon-font-name}.eot?#iefix')) format('embedded-opentype'),
+         url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.woff2'), '#{$icon-font-path}#{$icon-font-name}.woff2')) format('woff2'),
+         url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.woff'), '#{$icon-font-path}#{$icon-font-name}.woff')) format('woff'),
+         url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.ttf'), '#{$icon-font-path}#{$icon-font-name}.ttf')) format('truetype'),
+         url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.svg##{$icon-font-svg-id}'), '#{$icon-font-path}#{$icon-font-name}.svg##{$icon-font-svg-id}')) format('svg');
+  }
 }
 
 // Catchall baseclass
diff --git a/addons/web/static/lib/bootstrap/less/grid.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_grid.scss
index e100655b70e..b15ca27bb54 100644
--- a/addons/web/static/lib/bootstrap/less/grid.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_grid.scss
@@ -8,16 +8,16 @@
 // Set the container width, and override it for fixed navbars in media queries.
 
 .container {
-  .container-fixed();
+  @include container-fixed;
 
-  @media (min-width: @screen-sm-min) {
-    width: @container-sm;
+  @media (min-width: $screen-sm-min) {
+    width: $container-sm;
   }
-  @media (min-width: @screen-md-min) {
-    width: @container-md;
+  @media (min-width: $screen-md-min) {
+    width: $container-md;
   }
-  @media (min-width: @screen-lg-min) {
-    width: @container-lg;
+  @media (min-width: $screen-lg-min) {
+    width: $container-lg;
   }
 }
 
@@ -28,7 +28,7 @@
 // width for fluid, full width layouts.
 
 .container-fluid {
-  .container-fixed();
+  @include container-fixed;
 }
 
 
@@ -37,7 +37,7 @@
 // Rows contain and clear the floats of your columns.
 
 .row {
-  .make-row();
+  @include make-row;
 }
 
 
@@ -45,7 +45,7 @@
 //
 // Common styles for small and large grid columns
 
-.make-grid-columns();
+@include make-grid-columns;
 
 
 // Extra small grid
@@ -53,7 +53,7 @@
 // Columns, offsets, pushes, and pulls for extra small devices like
 // smartphones.
 
-.make-grid(xs);
+@include make-grid(xs);
 
 
 // Small grid
@@ -61,8 +61,8 @@
 // Columns, offsets, pushes, and pulls for the small device range, from phones
 // to tablets.
 
-@media (min-width: @screen-sm-min) {
-  .make-grid(sm);
+@media (min-width: $screen-sm-min) {
+  @include make-grid(sm);
 }
 
 
@@ -70,8 +70,8 @@
 //
 // Columns, offsets, pushes, and pulls for the desktop device range.
 
-@media (min-width: @screen-md-min) {
-  .make-grid(md);
+@media (min-width: $screen-md-min) {
+  @include make-grid(md);
 }
 
 
@@ -79,6 +79,6 @@
 //
 // Columns, offsets, pushes, and pulls for the large desktop device range.
 
-@media (min-width: @screen-lg-min) {
-  .make-grid(lg);
+@media (min-width: $screen-lg-min) {
+  @include make-grid(lg);
 }
diff --git a/addons/web/static/lib/bootstrap/less/input-groups.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_input-groups.scss
index d0763db7fff..81f46f3e616 100644
--- a/addons/web/static/lib/bootstrap/less/input-groups.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_input-groups.scss
@@ -44,12 +44,12 @@
 .input-group-lg > .form-control,
 .input-group-lg > .input-group-addon,
 .input-group-lg > .input-group-btn > .btn {
-  .input-lg();
+  @extend .input-lg;
 }
 .input-group-sm > .form-control,
 .input-group-sm > .input-group-addon,
 .input-group-sm > .input-group-btn > .btn {
-  .input-sm();
+  @extend .input-sm;
 }
 
 
@@ -75,26 +75,26 @@
 // Text input groups
 // -------------------------
 .input-group-addon {
-  padding: @padding-base-vertical @padding-base-horizontal;
-  font-size: @font-size-base;
+  padding: $padding-base-vertical $padding-base-horizontal;
+  font-size: $font-size-base;
   font-weight: normal;
   line-height: 1;
-  color: @input-color;
+  color: $input-color;
   text-align: center;
-  background-color: @input-group-addon-bg;
-  border: 1px solid @input-group-addon-border-color;
-  border-radius: @input-border-radius;
+  background-color: $input-group-addon-bg;
+  border: 1px solid $input-group-addon-border-color;
+  border-radius: $input-border-radius;
 
   // Sizing
   &.input-sm {
-    padding: @padding-small-vertical @padding-small-horizontal;
-    font-size: @font-size-small;
-    border-radius: @input-border-radius-small;
+    padding: $padding-small-vertical $padding-small-horizontal;
+    font-size: $font-size-small;
+    border-radius: $input-border-radius-small;
   }
   &.input-lg {
-    padding: @padding-large-vertical @padding-large-horizontal;
-    font-size: @font-size-large;
-    border-radius: @input-border-radius-large;
+    padding: $padding-large-vertical $padding-large-horizontal;
+    font-size: $font-size-large;
+    border-radius: $input-border-radius-large;
   }
 
   // Nuke default margins from checkboxes and radios to vertically center within.
@@ -112,7 +112,7 @@
 .input-group-btn:first-child > .dropdown-toggle,
 .input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle),
 .input-group-btn:last-child > .btn-group:not(:last-child) > .btn {
-  .border-right-radius(0);
+  @include border-right-radius(0);
 }
 .input-group-addon:first-child {
   border-right: 0;
@@ -124,7 +124,7 @@
 .input-group-btn:last-child > .dropdown-toggle,
 .input-group-btn:first-child > .btn:not(:first-child),
 .input-group-btn:first-child > .btn-group:not(:first-child) > .btn {
-  .border-left-radius(0);
+  @include border-left-radius(0);
 }
 .input-group-addon:last-child {
   border-left: 0;
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_jumbotron.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_jumbotron.scss
new file mode 100644
index 00000000000..a27da4738fe
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_jumbotron.scss
@@ -0,0 +1,54 @@
+//
+// Jumbotron
+// --------------------------------------------------
+
+
+.jumbotron {
+  padding-top:    $jumbotron-padding;
+  padding-bottom: $jumbotron-padding;
+  margin-bottom: $jumbotron-padding;
+  color: $jumbotron-color;
+  background-color: $jumbotron-bg;
+
+  h1,
+  .h1 {
+    color: $jumbotron-heading-color;
+  }
+
+  p {
+    margin-bottom: ($jumbotron-padding / 2);
+    font-size: $jumbotron-font-size;
+    font-weight: 200;
+  }
+
+  > hr {
+    border-top-color: darken($jumbotron-bg, 10%);
+  }
+
+  .container &,
+  .container-fluid & {
+    border-radius: $border-radius-large; // Only round corners at higher resolutions if contained in a container
+    padding-left:  ($grid-gutter-width / 2);
+    padding-right: ($grid-gutter-width / 2);
+  }
+
+  .container {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: $screen-sm-min) {
+    padding-top:    ($jumbotron-padding * 1.6);
+    padding-bottom: ($jumbotron-padding * 1.6);
+
+    .container &,
+    .container-fluid & {
+      padding-left:  ($jumbotron-padding * 2);
+      padding-right: ($jumbotron-padding * 2);
+    }
+
+    h1,
+    .h1 {
+      font-size: $jumbotron-heading-font-size;
+    }
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/less/labels.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_labels.scss
index 9a5a27006a5..42ed6ea1232 100644
--- a/addons/web/static/lib/bootstrap/less/labels.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_labels.scss
@@ -8,21 +8,13 @@
   font-size: 75%;
   font-weight: bold;
   line-height: 1;
-  color: @label-color;
+  color: $label-color;
   text-align: center;
   white-space: nowrap;
   vertical-align: baseline;
   border-radius: .25em;
 
-  // Add hover effects, but only for links
-  a& {
-    &:hover,
-    &:focus {
-      color: @label-link-hover-color;
-      text-decoration: none;
-      cursor: pointer;
-    }
-  }
+  // [converter] extracted a& to a.label
 
   // Empty labels collapse automatically (not available in IE8)
   &:empty {
@@ -36,29 +28,39 @@
   }
 }
 
+// Add hover effects, but only for links
+a.label {
+  &:hover,
+  &:focus {
+    color: $label-link-hover-color;
+    text-decoration: none;
+    cursor: pointer;
+  }
+}
+
 // Colors
 // Contextual variations (linked labels get darker on :hover)
 
 .label-default {
-  .label-variant(@label-default-bg);
+  @include label-variant($label-default-bg);
 }
 
 .label-primary {
-  .label-variant(@label-primary-bg);
+  @include label-variant($label-primary-bg);
 }
 
 .label-success {
-  .label-variant(@label-success-bg);
+  @include label-variant($label-success-bg);
 }
 
 .label-info {
-  .label-variant(@label-info-bg);
+  @include label-variant($label-info-bg);
 }
 
 .label-warning {
-  .label-variant(@label-warning-bg);
+  @include label-variant($label-warning-bg);
 }
 
 .label-danger {
-  .label-variant(@label-danger-bg);
+  @include label-variant($label-danger-bg);
 }
diff --git a/addons/web/static/lib/bootstrap/less/list-group.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_list-group.scss
index 216b91230ab..7cb83aab05c 100644
--- a/addons/web/static/lib/bootstrap/less/list-group.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_list-group.scss
@@ -24,16 +24,16 @@
   padding: 10px 15px;
   // Place the border on the list items and negative margin up for better styling
   margin-bottom: -1px;
-  background-color: @list-group-bg;
-  border: 1px solid @list-group-border;
+  background-color: $list-group-bg;
+  border: 1px solid $list-group-border;
 
   // Round the first and last items
   &:first-child {
-    .border-top-radius(@list-group-border-radius);
+    @include border-top-radius($list-group-border-radius);
   }
   &:last-child {
     margin-bottom: 0;
-    .border-bottom-radius(@list-group-border-radius);
+    @include border-bottom-radius($list-group-border-radius);
   }
 }
 
@@ -45,18 +45,18 @@
 
 a.list-group-item,
 button.list-group-item {
-  color: @list-group-link-color;
+  color: $list-group-link-color;
 
   .list-group-item-heading {
-    color: @list-group-link-heading-color;
+    color: $list-group-link-heading-color;
   }
 
   // Hover state
   &:hover,
   &:focus {
     text-decoration: none;
-    color: @list-group-link-hover-color;
-    background-color: @list-group-hover-bg;
+    color: $list-group-link-hover-color;
+    background-color: $list-group-hover-bg;
   }
 }
 
@@ -70,16 +70,16 @@ button.list-group-item {
   &.disabled,
   &.disabled:hover,
   &.disabled:focus {
-    background-color: @list-group-disabled-bg;
-    color: @list-group-disabled-color;
-    cursor: @cursor-disabled;
+    background-color: $list-group-disabled-bg;
+    color: $list-group-disabled-color;
+    cursor: $cursor-disabled;
 
     // Force color to inherit for custom content
     .list-group-item-heading {
       color: inherit;
     }
     .list-group-item-text {
-      color: @list-group-disabled-text-color;
+      color: $list-group-disabled-text-color;
     }
   }
 
@@ -88,9 +88,9 @@ button.list-group-item {
   &.active:hover,
   &.active:focus {
     z-index: 2; // Place active items above their siblings for proper border styling
-    color: @list-group-active-color;
-    background-color: @list-group-active-bg;
-    border-color: @list-group-active-border;
+    color: $list-group-active-color;
+    background-color: $list-group-active-bg;
+    border-color: $list-group-active-border;
 
     // Force color to inherit for custom content
     .list-group-item-heading,
@@ -99,7 +99,7 @@ button.list-group-item {
       color: inherit;
     }
     .list-group-item-text {
-      color: @list-group-active-text-color;
+      color: $list-group-active-text-color;
     }
   }
 }
@@ -110,10 +110,10 @@ button.list-group-item {
 // Add modifier classes to change text and background color on individual items.
 // Organizationally, this must come after the `:hover` states.
 
-.list-group-item-variant(success; @state-success-bg; @state-success-text);
-.list-group-item-variant(info; @state-info-bg; @state-info-text);
-.list-group-item-variant(warning; @state-warning-bg; @state-warning-text);
-.list-group-item-variant(danger; @state-danger-bg; @state-danger-text);
+@include list-group-item-variant(success, $state-success-bg, $state-success-text);
+@include list-group-item-variant(info, $state-info-bg, $state-info-text);
+@include list-group-item-variant(warning, $state-warning-bg, $state-warning-text);
+@include list-group-item-variant(danger, $state-danger-bg, $state-danger-text);
 
 
 // Custom content options
diff --git a/addons/web/static/lib/bootstrap/less/media.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_media.scss
index 8c835e861ed..8c835e861ed 100644
--- a/addons/web/static/lib/bootstrap/less/media.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_media.scss
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_mixins.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_mixins.scss
new file mode 100644
index 00000000000..78cd5aa0ff3
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_mixins.scss
@@ -0,0 +1,40 @@
+// Mixins
+// --------------------------------------------------
+
+// Utilities
+@import "mixins/hide-text";
+@import "mixins/opacity";
+@import "mixins/image";
+@import "mixins/labels";
+@import "mixins/reset-filter";
+@import "mixins/resize";
+@import "mixins/responsive-visibility";
+@import "mixins/size";
+@import "mixins/tab-focus";
+@import "mixins/reset-text";
+@import "mixins/text-emphasis";
+@import "mixins/text-overflow";
+@import "mixins/vendor-prefixes";
+
+// Components
+@import "mixins/alerts";
+@import "mixins/buttons";
+@import "mixins/panels";
+@import "mixins/pagination";
+@import "mixins/list-group";
+@import "mixins/nav-divider";
+@import "mixins/forms";
+@import "mixins/progress-bar";
+@import "mixins/table-row";
+
+// Skins
+@import "mixins/background-variant";
+@import "mixins/border-radius";
+@import "mixins/gradients";
+
+// Layout
+@import "mixins/clearfix";
+@import "mixins/center-block";
+@import "mixins/nav-vertical-align";
+@import "mixins/grid-framework";
+@import "mixins/grid";
diff --git a/addons/web/static/lib/bootstrap/less/modals.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_modals.scss
index 767ce36ba37..823870f2a4d 100644
--- a/addons/web/static/lib/bootstrap/less/modals.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_modals.scss
@@ -21,7 +21,7 @@
   right: 0;
   bottom: 0;
   left: 0;
-  z-index: @zindex-modal;
+  z-index: $zindex-modal;
   -webkit-overflow-scrolling: touch;
 
   // Prevent Chrome on Windows from adding a focus outline. For details, see
@@ -30,10 +30,10 @@
 
   // When fading in the modal, animate it to slide down
   &.fade .modal-dialog {
-    .translate(0, -25%);
-    .transition-transform(~"0.3s ease-out");
+    @include translate(0, -25%);
+    @include transition-transform(0.3s ease-out);
   }
-  &.in .modal-dialog { .translate(0, 0) }
+  &.in .modal-dialog { @include translate(0, 0) }
 }
 .modal-open .modal {
   overflow-x: hidden;
@@ -50,11 +50,11 @@
 // Actual modal
 .modal-content {
   position: relative;
-  background-color: @modal-content-bg;
-  border: 1px solid @modal-content-fallback-border-color; //old browsers fallback (ie8 etc)
-  border: 1px solid @modal-content-border-color;
-  border-radius: @border-radius-large;
-  .box-shadow(0 3px 9px rgba(0,0,0,.5));
+  background-color: $modal-content-bg;
+  border: 1px solid $modal-content-fallback-border-color; //old browsers fallback (ie8 etc)
+  border: 1px solid $modal-content-border-color;
+  border-radius: $border-radius-large;
+  @include box-shadow(0 3px 9px rgba(0,0,0,.5));
   background-clip: padding-box;
   // Remove focus outline from opened modal
   outline: 0;
@@ -67,19 +67,19 @@
   right: 0;
   bottom: 0;
   left: 0;
-  z-index: @zindex-modal-background;
-  background-color: @modal-backdrop-bg;
+  z-index: $zindex-modal-background;
+  background-color: $modal-backdrop-bg;
   // Fade for backdrop
-  &.fade { .opacity(0); }
-  &.in { .opacity(@modal-backdrop-opacity); }
+  &.fade { @include opacity(0); }
+  &.in { @include opacity($modal-backdrop-opacity); }
 }
 
 // Modal header
 // Top section of the modal w/ title and dismiss
 .modal-header {
-  padding: @modal-title-padding;
-  border-bottom: 1px solid @modal-header-border-color;
-  &:extend(.clearfix all);
+  padding: $modal-title-padding;
+  border-bottom: 1px solid $modal-header-border-color;
+  @include clearfix;
 }
 // Close icon
 .modal-header .close {
@@ -89,22 +89,22 @@
 // Title text within header
 .modal-title {
   margin: 0;
-  line-height: @modal-title-line-height;
+  line-height: $modal-title-line-height;
 }
 
 // Modal body
 // Where all modal content resides (sibling of .modal-header and .modal-footer)
 .modal-body {
   position: relative;
-  padding: @modal-inner-padding;
+  padding: $modal-inner-padding;
 }
 
 // Footer (for actions)
 .modal-footer {
-  padding: @modal-inner-padding;
+  padding: $modal-inner-padding;
   text-align: right; // right align buttons
-  border-top: 1px solid @modal-footer-border-color;
-  &:extend(.clearfix all); // clear it in case folks use .pull-* classes on buttons
+  border-top: 1px solid $modal-footer-border-color;
+  @include clearfix; // clear it in case folks use .pull-* classes on buttons
 
   // Properly space out buttons
   .btn + .btn {
@@ -131,20 +131,20 @@
 }
 
 // Scale up the modal
-@media (min-width: @screen-sm-min) {
+@media (min-width: $screen-sm-min) {
   // Automatically set modal's width for larger viewports
   .modal-dialog {
-    width: @modal-md;
+    width: $modal-md;
     margin: 30px auto;
   }
   .modal-content {
-    .box-shadow(0 5px 15px rgba(0,0,0,.5));
+    @include box-shadow(0 5px 15px rgba(0,0,0,.5));
   }
 
   // Modal sizes
-  .modal-sm { width: @modal-sm; }
+  .modal-sm { width: $modal-sm; }
 }
 
-@media (min-width: @screen-md-min) {
-  .modal-lg { width: @modal-lg; }
+@media (min-width: $screen-md-min) {
+  .modal-lg { width: $modal-lg; }
 }
diff --git a/addons/web/static/lib/bootstrap/less/navbar.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_navbar.scss
index 6d751bb9ce0..11e5c01c158 100644
--- a/addons/web/static/lib/bootstrap/less/navbar.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_navbar.scss
@@ -10,15 +10,15 @@
 
 .navbar {
   position: relative;
-  min-height: @navbar-height; // Ensure a navbar always shows (e.g., without a .navbar-brand in collapsed mode)
-  margin-bottom: @navbar-margin-bottom;
+  min-height: $navbar-height; // Ensure a navbar always shows (e.g., without a .navbar-brand in collapsed mode)
+  margin-bottom: $navbar-margin-bottom;
   border: 1px solid transparent;
 
   // Prevent floats from breaking the navbar
-  &:extend(.clearfix all);
+  @include clearfix;
 
-  @media (min-width: @grid-float-breakpoint) {
-    border-radius: @navbar-border-radius;
+  @media (min-width: $grid-float-breakpoint) {
+    border-radius: $navbar-border-radius;
   }
 }
 
@@ -29,9 +29,9 @@
 // styling of responsive aspects.
 
 .navbar-header {
-  &:extend(.clearfix all);
+  @include clearfix;
 
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     float: left;
   }
 }
@@ -49,18 +49,18 @@
 
 .navbar-collapse {
   overflow-x: visible;
-  padding-right: @navbar-padding-horizontal;
-  padding-left:  @navbar-padding-horizontal;
+  padding-right: $navbar-padding-horizontal;
+  padding-left:  $navbar-padding-horizontal;
   border-top: 1px solid transparent;
   box-shadow: inset 0 1px 0 rgba(255,255,255,.1);
-  &:extend(.clearfix all);
+  @include clearfix;
   -webkit-overflow-scrolling: touch;
 
   &.in {
     overflow-y: auto;
   }
 
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     width: auto;
     border-top: 0;
     box-shadow: none;
@@ -90,9 +90,9 @@
 .navbar-fixed-top,
 .navbar-fixed-bottom {
   .navbar-collapse {
-    max-height: @navbar-collapse-max-height;
+    max-height: $navbar-collapse-max-height;
 
-    @media (max-device-width: @screen-xs-min) and (orientation: landscape) {
+    @media (max-device-width: $screen-xs-min) and (orientation: landscape) {
       max-height: 200px;
     }
   }
@@ -107,10 +107,10 @@
 .container-fluid {
   > .navbar-header,
   > .navbar-collapse {
-    margin-right: -@navbar-padding-horizontal;
-    margin-left:  -@navbar-padding-horizontal;
+    margin-right: -$navbar-padding-horizontal;
+    margin-left:  -$navbar-padding-horizontal;
 
-    @media (min-width: @grid-float-breakpoint) {
+    @media (min-width: $grid-float-breakpoint) {
       margin-right: 0;
       margin-left:  0;
     }
@@ -126,10 +126,10 @@
 
 // Static top (unfixed, but 100% wide) navbar
 .navbar-static-top {
-  z-index: @zindex-navbar;
+  z-index: $zindex-navbar;
   border-width: 0 0 1px;
 
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     border-radius: 0;
   }
 }
@@ -140,10 +140,10 @@
   position: fixed;
   right: 0;
   left: 0;
-  z-index: @zindex-navbar-fixed;
+  z-index: $zindex-navbar-fixed;
 
   // Undo the rounded corners
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     border-radius: 0;
   }
 }
@@ -162,10 +162,10 @@
 
 .navbar-brand {
   float: left;
-  padding: @navbar-padding-vertical @navbar-padding-horizontal;
-  font-size: @font-size-large;
-  line-height: @line-height-computed;
-  height: @navbar-height;
+  padding: $navbar-padding-vertical $navbar-padding-horizontal;
+  font-size: $font-size-large;
+  line-height: $line-height-computed;
+  height: $navbar-height;
 
   &:hover,
   &:focus {
@@ -176,10 +176,10 @@
     display: block;
   }
 
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     .navbar > .container &,
     .navbar > .container-fluid & {
-      margin-left: -@navbar-padding-horizontal;
+      margin-left: -$navbar-padding-horizontal;
     }
   }
 }
@@ -193,13 +193,13 @@
 .navbar-toggle {
   position: relative;
   float: right;
-  margin-right: @navbar-padding-horizontal;
+  margin-right: $navbar-padding-horizontal;
   padding: 9px 10px;
-  .navbar-vertical-align(34px);
+  @include navbar-vertical-align(34px);
   background-color: transparent;
   background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
   border: 1px solid transparent;
-  border-radius: @border-radius-base;
+  border-radius: $border-radius-base;
 
   // We remove the `outline` here, but later compensate by attaching `:hover`
   // styles to `:focus`.
@@ -218,7 +218,7 @@
     margin-top: 4px;
   }
 
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     display: none;
   }
 }
@@ -230,15 +230,15 @@
 // the nav the full height of the horizontal nav (above 768px).
 
 .navbar-nav {
-  margin: (@navbar-padding-vertical / 2) -@navbar-padding-horizontal;
+  margin: ($navbar-padding-vertical / 2) (-$navbar-padding-horizontal);
 
   > li > a {
     padding-top:    10px;
     padding-bottom: 10px;
-    line-height: @line-height-computed;
+    line-height: $line-height-computed;
   }
 
-  @media (max-width: @grid-float-breakpoint-max) {
+  @media (max-width: $grid-float-breakpoint-max) {
     // Dropdowns get custom display when collapsed
     .open .dropdown-menu {
       position: static;
@@ -253,7 +253,7 @@
         padding: 5px 15px 5px 25px;
       }
       > li > a {
-        line-height: @line-height-computed;
+        line-height: $line-height-computed;
         &:hover,
         &:focus {
           background-image: none;
@@ -263,15 +263,15 @@
   }
 
   // Uncollapse the nav
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     float: left;
     margin: 0;
 
     > li {
       float: left;
       > a {
-        padding-top:    @navbar-padding-vertical;
-        padding-bottom: @navbar-padding-vertical;
+        padding-top:    $navbar-padding-vertical;
+        padding-bottom: $navbar-padding-vertical;
       }
     }
   }
@@ -284,19 +284,19 @@
 // our navbars.
 
 .navbar-form {
-  margin-left: -@navbar-padding-horizontal;
-  margin-right: -@navbar-padding-horizontal;
-  padding: 10px @navbar-padding-horizontal;
+  margin-left: -$navbar-padding-horizontal;
+  margin-right: -$navbar-padding-horizontal;
+  padding: 10px $navbar-padding-horizontal;
   border-top: 1px solid transparent;
   border-bottom: 1px solid transparent;
-  @shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 0 rgba(255,255,255,.1);
-  .box-shadow(@shadow);
+  $shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 0 rgba(255,255,255,.1);
+  @include box-shadow($shadow);
 
   // Mixin behavior for optimum display
-  .form-inline();
+  @include form-inline;
 
   .form-group {
-    @media (max-width: @grid-float-breakpoint-max) {
+    @media (max-width: $grid-float-breakpoint-max) {
       margin-bottom: 5px;
 
       &:last-child {
@@ -306,17 +306,17 @@
   }
 
   // Vertically center in expanded, horizontal navbar
-  .navbar-vertical-align(@input-height-base);
+  @include navbar-vertical-align($input-height-base);
 
   // Undo 100% width for pull classes
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     width: auto;
     border: 0;
     margin-left: 0;
     margin-right: 0;
     padding-top: 0;
     padding-bottom: 0;
-    .box-shadow(none);
+    @include box-shadow(none);
   }
 }
 
@@ -326,13 +326,13 @@
 // Menu position and menu carets
 .navbar-nav > li > .dropdown-menu {
   margin-top: 0;
-  .border-top-radius(0);
+  @include border-top-radius(0);
 }
 // Menu position and menu caret support for dropups via extra dropup class
 .navbar-fixed-bottom .navbar-nav > li > .dropdown-menu {
   margin-bottom: 0;
-  .border-top-radius(@navbar-border-radius);
-  .border-bottom-radius(0);
+  @include border-top-radius($navbar-border-radius);
+  @include border-bottom-radius(0);
 }
 
 
@@ -341,13 +341,13 @@
 // Vertically center a button within a navbar (when *not* in a form).
 
 .navbar-btn {
-  .navbar-vertical-align(@input-height-base);
+  @include navbar-vertical-align($input-height-base);
 
   &.btn-sm {
-    .navbar-vertical-align(@input-height-small);
+    @include navbar-vertical-align($input-height-small);
   }
   &.btn-xs {
-    .navbar-vertical-align(22);
+    @include navbar-vertical-align(22);
   }
 }
 
@@ -357,12 +357,12 @@
 // Add a class to make any element properly align itself vertically within the navbars.
 
 .navbar-text {
-  .navbar-vertical-align(@line-height-computed);
+  @include navbar-vertical-align($line-height-computed);
 
-  @media (min-width: @grid-float-breakpoint) {
+  @media (min-width: $grid-float-breakpoint) {
     float: left;
-    margin-left: @navbar-padding-horizontal;
-    margin-right: @navbar-padding-horizontal;
+    margin-left: $navbar-padding-horizontal;
+    margin-right: $navbar-padding-horizontal;
   }
 }
 
@@ -375,11 +375,13 @@
 //
 // Declared after the navbar components to ensure more specificity on the margins.
 
-@media (min-width: @grid-float-breakpoint) {
-  .navbar-left  { .pull-left(); }
+@media (min-width: $grid-float-breakpoint) {
+  .navbar-left {
+    float: left !important;
+  }
   .navbar-right {
-    .pull-right();
-    margin-right: -@navbar-padding-horizontal;
+    float: right !important;
+  margin-right: -$navbar-padding-horizontal;
 
     ~ .navbar-right {
       margin-right: 0;
@@ -393,64 +395,64 @@
 
 // Default navbar
 .navbar-default {
-  background-color: @navbar-default-bg;
-  border-color: @navbar-default-border;
+  background-color: $navbar-default-bg;
+  border-color: $navbar-default-border;
 
   .navbar-brand {
-    color: @navbar-default-brand-color;
+    color: $navbar-default-brand-color;
     &:hover,
     &:focus {
-      color: @navbar-default-brand-hover-color;
-      background-color: @navbar-default-brand-hover-bg;
+      color: $navbar-default-brand-hover-color;
+      background-color: $navbar-default-brand-hover-bg;
     }
   }
 
   .navbar-text {
-    color: @navbar-default-color;
+    color: $navbar-default-color;
   }
 
   .navbar-nav {
     > li > a {
-      color: @navbar-default-link-color;
+      color: $navbar-default-link-color;
 
       &:hover,
       &:focus {
-        color: @navbar-default-link-hover-color;
-        background-color: @navbar-default-link-hover-bg;
+        color: $navbar-default-link-hover-color;
+        background-color: $navbar-default-link-hover-bg;
       }
     }
     > .active > a {
       &,
       &:hover,
       &:focus {
-        color: @navbar-default-link-active-color;
-        background-color: @navbar-default-link-active-bg;
+        color: $navbar-default-link-active-color;
+        background-color: $navbar-default-link-active-bg;
       }
     }
     > .disabled > a {
       &,
       &:hover,
       &:focus {
-        color: @navbar-default-link-disabled-color;
-        background-color: @navbar-default-link-disabled-bg;
+        color: $navbar-default-link-disabled-color;
+        background-color: $navbar-default-link-disabled-bg;
       }
     }
   }
 
   .navbar-toggle {
-    border-color: @navbar-default-toggle-border-color;
+    border-color: $navbar-default-toggle-border-color;
     &:hover,
     &:focus {
-      background-color: @navbar-default-toggle-hover-bg;
+      background-color: $navbar-default-toggle-hover-bg;
     }
     .icon-bar {
-      background-color: @navbar-default-toggle-icon-bar-bg;
+      background-color: $navbar-default-toggle-icon-bar-bg;
     }
   }
 
   .navbar-collapse,
   .navbar-form {
-    border-color: @navbar-default-border;
+    border-color: $navbar-default-border;
   }
 
   // Dropdown menu items
@@ -460,36 +462,36 @@
       &,
       &:hover,
       &:focus {
-        background-color: @navbar-default-link-active-bg;
-        color: @navbar-default-link-active-color;
+        background-color: $navbar-default-link-active-bg;
+        color: $navbar-default-link-active-color;
       }
     }
 
-    @media (max-width: @grid-float-breakpoint-max) {
+    @media (max-width: $grid-float-breakpoint-max) {
       // Dropdowns get custom display when collapsed
       .open .dropdown-menu {
         > li > a {
-          color: @navbar-default-link-color;
+          color: $navbar-default-link-color;
           &:hover,
           &:focus {
-            color: @navbar-default-link-hover-color;
-            background-color: @navbar-default-link-hover-bg;
+            color: $navbar-default-link-hover-color;
+            background-color: $navbar-default-link-hover-bg;
           }
         }
         > .active > a {
           &,
           &:hover,
           &:focus {
-            color: @navbar-default-link-active-color;
-            background-color: @navbar-default-link-active-bg;
+            color: $navbar-default-link-active-color;
+            background-color: $navbar-default-link-active-bg;
           }
         }
         > .disabled > a {
           &,
           &:hover,
           &:focus {
-            color: @navbar-default-link-disabled-color;
-            background-color: @navbar-default-link-disabled-bg;
+            color: $navbar-default-link-disabled-color;
+            background-color: $navbar-default-link-disabled-bg;
           }
         }
       }
@@ -502,23 +504,23 @@
   // Add a class to ensure links outside the navbar nav are colored correctly.
 
   .navbar-link {
-    color: @navbar-default-link-color;
+    color: $navbar-default-link-color;
     &:hover {
-      color: @navbar-default-link-hover-color;
+      color: $navbar-default-link-hover-color;
     }
   }
 
   .btn-link {
-    color: @navbar-default-link-color;
+    color: $navbar-default-link-color;
     &:hover,
     &:focus {
-      color: @navbar-default-link-hover-color;
+      color: $navbar-default-link-hover-color;
     }
     &[disabled],
     fieldset[disabled] & {
       &:hover,
       &:focus {
-        color: @navbar-default-link-disabled-color;
+        color: $navbar-default-link-disabled-color;
       }
     }
   }
@@ -527,65 +529,65 @@
 // Inverse navbar
 
 .navbar-inverse {
-  background-color: @navbar-inverse-bg;
-  border-color: @navbar-inverse-border;
+  background-color: $navbar-inverse-bg;
+  border-color: $navbar-inverse-border;
 
   .navbar-brand {
-    color: @navbar-inverse-brand-color;
+    color: $navbar-inverse-brand-color;
     &:hover,
     &:focus {
-      color: @navbar-inverse-brand-hover-color;
-      background-color: @navbar-inverse-brand-hover-bg;
+      color: $navbar-inverse-brand-hover-color;
+      background-color: $navbar-inverse-brand-hover-bg;
     }
   }
 
   .navbar-text {
-    color: @navbar-inverse-color;
+    color: $navbar-inverse-color;
   }
 
   .navbar-nav {
     > li > a {
-      color: @navbar-inverse-link-color;
+      color: $navbar-inverse-link-color;
 
       &:hover,
       &:focus {
-        color: @navbar-inverse-link-hover-color;
-        background-color: @navbar-inverse-link-hover-bg;
+        color: $navbar-inverse-link-hover-color;
+        background-color: $navbar-inverse-link-hover-bg;
       }
     }
     > .active > a {
       &,
       &:hover,
       &:focus {
-        color: @navbar-inverse-link-active-color;
-        background-color: @navbar-inverse-link-active-bg;
+        color: $navbar-inverse-link-active-color;
+        background-color: $navbar-inverse-link-active-bg;
       }
     }
     > .disabled > a {
       &,
       &:hover,
       &:focus {
-        color: @navbar-inverse-link-disabled-color;
-        background-color: @navbar-inverse-link-disabled-bg;
+        color: $navbar-inverse-link-disabled-color;
+        background-color: $navbar-inverse-link-disabled-bg;
       }
     }
   }
 
   // Darken the responsive nav toggle
   .navbar-toggle {
-    border-color: @navbar-inverse-toggle-border-color;
+    border-color: $navbar-inverse-toggle-border-color;
     &:hover,
     &:focus {
-      background-color: @navbar-inverse-toggle-hover-bg;
+      background-color: $navbar-inverse-toggle-hover-bg;
     }
     .icon-bar {
-      background-color: @navbar-inverse-toggle-icon-bar-bg;
+      background-color: $navbar-inverse-toggle-icon-bar-bg;
     }
   }
 
   .navbar-collapse,
   .navbar-form {
-    border-color: darken(@navbar-inverse-bg, 7%);
+    border-color: darken($navbar-inverse-bg, 7%);
   }
 
   // Dropdowns
@@ -594,42 +596,42 @@
       &,
       &:hover,
       &:focus {
-        background-color: @navbar-inverse-link-active-bg;
-        color: @navbar-inverse-link-active-color;
+        background-color: $navbar-inverse-link-active-bg;
+        color: $navbar-inverse-link-active-color;
       }
     }
 
-    @media (max-width: @grid-float-breakpoint-max) {
+    @media (max-width: $grid-float-breakpoint-max) {
       // Dropdowns get custom display
       .open .dropdown-menu {
         > .dropdown-header {
-          border-color: @navbar-inverse-border;
+          border-color: $navbar-inverse-border;
         }
         .divider {
-          background-color: @navbar-inverse-border;
+          background-color: $navbar-inverse-border;
         }
         > li > a {
-          color: @navbar-inverse-link-color;
+          color: $navbar-inverse-link-color;
           &:hover,
           &:focus {
-            color: @navbar-inverse-link-hover-color;
-            background-color: @navbar-inverse-link-hover-bg;
+            color: $navbar-inverse-link-hover-color;
+            background-color: $navbar-inverse-link-hover-bg;
           }
         }
         > .active > a {
           &,
           &:hover,
           &:focus {
-            color: @navbar-inverse-link-active-color;
-            background-color: @navbar-inverse-link-active-bg;
+            color: $navbar-inverse-link-active-color;
+            background-color: $navbar-inverse-link-active-bg;
           }
         }
         > .disabled > a {
           &,
           &:hover,
           &:focus {
-            color: @navbar-inverse-link-disabled-color;
-            background-color: @navbar-inverse-link-disabled-bg;
+            color: $navbar-inverse-link-disabled-color;
+            background-color: $navbar-inverse-link-disabled-bg;
           }
         }
       }
@@ -637,23 +639,23 @@
   }
 
   .navbar-link {
-    color: @navbar-inverse-link-color;
+    color: $navbar-inverse-link-color;
     &:hover {
-      color: @navbar-inverse-link-hover-color;
+      color: $navbar-inverse-link-hover-color;
     }
   }
 
   .btn-link {
-    color: @navbar-inverse-link-color;
+    color: $navbar-inverse-link-color;
     &:hover,
     &:focus {
-      color: @navbar-inverse-link-hover-color;
+      color: $navbar-inverse-link-hover-color;
     }
     &[disabled],
     fieldset[disabled] & {
       &:hover,
       &:focus {
-        color: @navbar-inverse-link-disabled-color;
+        color: $navbar-inverse-link-disabled-color;
       }
     }
   }
diff --git a/addons/web/static/lib/bootstrap/less/navs.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_navs.scss
index a3d11b13621..9d369f30791 100644
--- a/addons/web/static/lib/bootstrap/less/navs.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_navs.scss
@@ -10,7 +10,7 @@
   margin-bottom: 0;
   padding-left: 0; // Override default ul/ol
   list-style: none;
-  &:extend(.clearfix all);
+  @include clearfix;
 
   > li {
     position: relative;
@@ -19,24 +19,24 @@
     > a {
       position: relative;
       display: block;
-      padding: @nav-link-padding;
+      padding: $nav-link-padding;
       &:hover,
       &:focus {
         text-decoration: none;
-        background-color: @nav-link-hover-bg;
+        background-color: $nav-link-hover-bg;
       }
     }
 
     // Disabled state sets text to gray and nukes hover/tab effects
     &.disabled > a {
-      color: @nav-disabled-link-color;
+      color: $nav-disabled-link-color;
 
       &:hover,
       &:focus {
-        color: @nav-disabled-link-hover-color;
+        color: $nav-disabled-link-hover-color;
         text-decoration: none;
         background-color: transparent;
-        cursor: @cursor-disabled;
+        cursor: $cursor-disabled;
       }
     }
   }
@@ -46,8 +46,8 @@
     &,
     &:hover,
     &:focus {
-      background-color: @nav-link-hover-bg;
-      border-color: @link-color;
+      background-color: $nav-link-hover-bg;
+      border-color: $link-color;
     }
   }
 
@@ -57,7 +57,7 @@
   // we missed it. We don't currently support this anywhere, but in the interest
   // of maintaining backward compatibility in case you use it, it's deprecated.
   .nav-divider {
-    .nav-divider();
+    @include nav-divider;
   }
 
   // Prevent IE8 from misplacing imgs
@@ -74,7 +74,7 @@
 
 // Give the tabs something to sit on
 .nav-tabs {
-  border-bottom: 1px solid @nav-tabs-border-color;
+  border-bottom: 1px solid $nav-tabs-border-color;
   > li {
     float: left;
     // Make the list-items overlay the bottom border
@@ -83,11 +83,11 @@
     // Actual tabs (as links)
     > a {
       margin-right: 2px;
-      line-height: @line-height-base;
+      line-height: $line-height-base;
       border: 1px solid transparent;
-      border-radius: @border-radius-base @border-radius-base 0 0;
+      border-radius: $border-radius-base $border-radius-base 0 0;
       &:hover {
-        border-color: @nav-tabs-link-hover-border-color @nav-tabs-link-hover-border-color @nav-tabs-border-color;
+        border-color: $nav-tabs-link-hover-border-color $nav-tabs-link-hover-border-color $nav-tabs-border-color;
       }
     }
 
@@ -96,9 +96,9 @@
       &,
       &:hover,
       &:focus {
-        color: @nav-tabs-active-link-hover-color;
-        background-color: @nav-tabs-active-link-hover-bg;
-        border: 1px solid @nav-tabs-active-link-hover-border-color;
+        color: $nav-tabs-active-link-hover-color;
+        background-color: $nav-tabs-active-link-hover-bg;
+        border: 1px solid $nav-tabs-active-link-hover-border-color;
         border-bottom-color: transparent;
         cursor: default;
       }
@@ -106,8 +106,8 @@
   }
   // pulling this in mainly for less shorthand
   &.nav-justified {
-    .nav-justified();
-    .nav-tabs-justified();
+    @extend .nav-justified;
+    @extend .nav-tabs-justified;
   }
 }
 
@@ -120,7 +120,7 @@
 
     // Links rendered as pills
     > a {
-      border-radius: @nav-pills-border-radius;
+      border-radius: $nav-pills-border-radius;
     }
     + li {
       margin-left: 2px;
@@ -131,8 +131,8 @@
       &,
       &:hover,
       &:focus {
-        color: @nav-pills-active-link-hover-color;
-        background-color: @nav-pills-active-link-hover-bg;
+        color: $nav-pills-active-link-hover-color;
+        background-color: $nav-pills-active-link-hover-bg;
       }
     }
   }
@@ -173,7 +173,7 @@
     left: auto;
   }
 
-  @media (min-width: @screen-sm-min) {
+  @media (min-width: $screen-sm-min) {
     > li {
       display: table-cell;
       width: 1%;
@@ -193,24 +193,24 @@
   > li > a {
     // Override margin from .nav-tabs
     margin-right: 0;
-    border-radius: @border-radius-base;
+    border-radius: $border-radius-base;
   }
 
   > .active > a,
   > .active > a:hover,
   > .active > a:focus {
-    border: 1px solid @nav-tabs-justified-link-border-color;
+    border: 1px solid $nav-tabs-justified-link-border-color;
   }
 
-  @media (min-width: @screen-sm-min) {
+  @media (min-width: $screen-sm-min) {
     > li > a {
-      border-bottom: 1px solid @nav-tabs-justified-link-border-color;
-      border-radius: @border-radius-base @border-radius-base 0 0;
+      border-bottom: 1px solid $nav-tabs-justified-link-border-color;
+      border-radius: $border-radius-base $border-radius-base 0 0;
     }
     > .active > a,
     > .active > a:hover,
     > .active > a:focus {
-      border-bottom-color: @nav-tabs-justified-active-link-border-color;
+      border-bottom-color: $nav-tabs-justified-active-link-border-color;
     }
   }
 }
@@ -238,5 +238,5 @@
   // make dropdown border overlap tab border
   margin-top: -1px;
   // Remove the top rounded corners here since there is a hard edge above the menu
-  .border-top-radius(0);
+  @include border-top-radius(0);
 }
diff --git a/addons/web/static/lib/bootstrap/less/normalize.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_normalize.scss
index 9dddf73ad29..9dddf73ad29 100644
--- a/addons/web/static/lib/bootstrap/less/normalize.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_normalize.scss
diff --git a/addons/web/static/lib/bootstrap/less/pager.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_pager.scss
index 41abaaadc5d..c2342174ff3 100644
--- a/addons/web/static/lib/bootstrap/less/pager.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_pager.scss
@@ -5,25 +5,25 @@
 
 .pager {
   padding-left: 0;
-  margin: @line-height-computed 0;
+  margin: $line-height-computed 0;
   list-style: none;
   text-align: center;
-  &:extend(.clearfix all);
+  @include clearfix;
   li {
     display: inline;
     > a,
     > span {
       display: inline-block;
       padding: 5px 14px;
-      background-color: @pager-bg;
-      border: 1px solid @pager-border;
-      border-radius: @pager-border-radius;
+      background-color: $pager-bg;
+      border: 1px solid $pager-border;
+      border-radius: $pager-border-radius;
     }
 
     > a:hover,
     > a:focus {
       text-decoration: none;
-      background-color: @pager-hover-bg;
+      background-color: $pager-hover-bg;
     }
   }
 
@@ -46,9 +46,9 @@
     > a:hover,
     > a:focus,
     > span {
-      color: @pager-disabled-color;
-      background-color: @pager-bg;
-      cursor: @cursor-disabled;
+      color: $pager-disabled-color;
+      background-color: $pager-bg;
+      cursor: $cursor-disabled;
     }
   }
 }
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_pagination.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_pagination.scss
new file mode 100644
index 00000000000..fecfa9c6421
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_pagination.scss
@@ -0,0 +1,89 @@
+//
+// Pagination (multiple pages)
+// --------------------------------------------------
+.pagination {
+  display: inline-block;
+  padding-left: 0;
+  margin: $line-height-computed 0;
+  border-radius: $border-radius-base;
+
+  > li {
+    display: inline; // Remove list-style and block-level defaults
+    > a,
+    > span {
+      position: relative;
+      float: left; // Collapse white-space
+      padding: $padding-base-vertical $padding-base-horizontal;
+      line-height: $line-height-base;
+      text-decoration: none;
+      color: $pagination-color;
+      background-color: $pagination-bg;
+      border: 1px solid $pagination-border;
+      margin-left: -1px;
+    }
+    &:first-child {
+      > a,
+      > span {
+        margin-left: 0;
+        @include border-left-radius($border-radius-base);
+      }
+    }
+    &:last-child {
+      > a,
+      > span {
+        @include border-right-radius($border-radius-base);
+      }
+    }
+  }
+
+  > li > a,
+  > li > span {
+    &:hover,
+    &:focus {
+      z-index: 2;
+      color: $pagination-hover-color;
+      background-color: $pagination-hover-bg;
+      border-color: $pagination-hover-border;
+    }
+  }
+
+  > .active > a,
+  > .active > span {
+    &,
+    &:hover,
+    &:focus {
+      z-index: 3;
+      color: $pagination-active-color;
+      background-color: $pagination-active-bg;
+      border-color: $pagination-active-border;
+      cursor: default;
+    }
+  }
+
+  > .disabled {
+    > span,
+    > span:hover,
+    > span:focus,
+    > a,
+    > a:hover,
+    > a:focus {
+      color: $pagination-disabled-color;
+      background-color: $pagination-disabled-bg;
+      border-color: $pagination-disabled-border;
+      cursor: $cursor-disabled;
+    }
+  }
+}
+
+// Sizing
+// --------------------------------------------------
+
+// Large
+.pagination-lg {
+  @include pagination-size($padding-large-vertical, $padding-large-horizontal, $font-size-large, $line-height-large, $border-radius-large);
+}
+
+// Small
+.pagination-sm {
+  @include pagination-size($padding-small-vertical, $padding-small-horizontal, $font-size-small, $line-height-small, $border-radius-small);
+}
diff --git a/addons/web/static/lib/bootstrap/less/panels.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_panels.scss
index 65aa3a83f34..6c568def47b 100644
--- a/addons/web/static/lib/bootstrap/less/panels.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_panels.scss
@@ -5,24 +5,24 @@
 
 // Base class
 .panel {
-  margin-bottom: @line-height-computed;
-  background-color: @panel-bg;
+  margin-bottom: $line-height-computed;
+  background-color: $panel-bg;
   border: 1px solid transparent;
-  border-radius: @panel-border-radius;
-  .box-shadow(0 1px 1px rgba(0,0,0,.05));
+  border-radius: $panel-border-radius;
+  @include box-shadow(0 1px 1px rgba(0,0,0,.05));
 }
 
 // Panel contents
 .panel-body {
-  padding: @panel-body-padding;
-  &:extend(.clearfix all);
+  padding: $panel-body-padding;
+  @include clearfix;
 }
 
 // Optional heading
 .panel-heading {
-  padding: @panel-heading-padding;
+  padding: $panel-heading-padding;
   border-bottom: 1px solid transparent;
-  .border-top-radius((@panel-border-radius - 1));
+  @include border-top-radius(($panel-border-radius - 1));
 
   > .dropdown .dropdown-toggle {
     color: inherit;
@@ -33,7 +33,7 @@
 .panel-title {
   margin-top: 0;
   margin-bottom: 0;
-  font-size: ceil((@font-size-base * 1.125));
+  font-size: ceil(($font-size-base * 1.125));
   color: inherit;
 
   > a,
@@ -47,10 +47,10 @@
 
 // Optional footer (stays gray in every modifier class)
 .panel-footer {
-  padding: @panel-footer-padding;
-  background-color: @panel-footer-bg;
-  border-top: 1px solid @panel-inner-border;
-  .border-bottom-radius((@panel-border-radius - 1));
+  padding: $panel-footer-padding;
+  background-color: $panel-footer-bg;
+  border-top: 1px solid $panel-inner-border;
+  @include border-bottom-radius(($panel-border-radius - 1));
 }
 
 
@@ -73,7 +73,7 @@
     &:first-child {
       .list-group-item:first-child {
         border-top: 0;
-        .border-top-radius((@panel-border-radius - 1));
+        @include border-top-radius(($panel-border-radius - 1));
       }
     }
 
@@ -81,13 +81,13 @@
     &:last-child {
       .list-group-item:last-child {
         border-bottom: 0;
-        .border-bottom-radius((@panel-border-radius - 1));
+        @include border-bottom-radius(($panel-border-radius - 1));
       }
     }
   }
   > .panel-heading + .panel-collapse > .list-group {
     .list-group-item:first-child {
-      .border-top-radius(0);
+      @include border-top-radius(0);
     }
   }
 }
@@ -113,28 +113,28 @@
     margin-bottom: 0;
 
     caption {
-      padding-left: @panel-body-padding;
-      padding-right: @panel-body-padding;
+      padding-left: $panel-body-padding;
+      padding-right: $panel-body-padding;
     }
   }
   // Add border top radius for first one
   > .table:first-child,
   > .table-responsive:first-child > .table:first-child {
-    .border-top-radius((@panel-border-radius - 1));
+    @include border-top-radius(($panel-border-radius - 1));
 
     > thead:first-child,
     > tbody:first-child {
       > tr:first-child {
-        border-top-left-radius: (@panel-border-radius - 1);
-        border-top-right-radius: (@panel-border-radius - 1);
+        border-top-left-radius: ($panel-border-radius - 1);
+        border-top-right-radius: ($panel-border-radius - 1);
 
         td:first-child,
         th:first-child {
-          border-top-left-radius: (@panel-border-radius - 1);
+          border-top-left-radius: ($panel-border-radius - 1);
         }
         td:last-child,
         th:last-child {
-          border-top-right-radius: (@panel-border-radius - 1);
+          border-top-right-radius: ($panel-border-radius - 1);
         }
       }
     }
@@ -142,21 +142,21 @@
   // Add border bottom radius for last one
   > .table:last-child,
   > .table-responsive:last-child > .table:last-child {
-    .border-bottom-radius((@panel-border-radius - 1));
+    @include border-bottom-radius(($panel-border-radius - 1));
 
     > tbody:last-child,
     > tfoot:last-child {
       > tr:last-child {
-        border-bottom-left-radius: (@panel-border-radius - 1);
-        border-bottom-right-radius: (@panel-border-radius - 1);
+        border-bottom-left-radius: ($panel-border-radius - 1);
+        border-bottom-right-radius: ($panel-border-radius - 1);
 
         td:first-child,
         th:first-child {
-          border-bottom-left-radius: (@panel-border-radius - 1);
+          border-bottom-left-radius: ($panel-border-radius - 1);
         }
         td:last-child,
         th:last-child {
-          border-bottom-right-radius: (@panel-border-radius - 1);
+          border-bottom-right-radius: ($panel-border-radius - 1);
         }
       }
     }
@@ -165,7 +165,7 @@
   > .panel-body + .table-responsive,
   > .table + .panel-body,
   > .table-responsive + .panel-body {
-    border-top: 1px solid @table-border-color;
+    border-top: 1px solid $table-border-color;
   }
   > .table > tbody:first-child > tr:first-child th,
   > .table > tbody:first-child > tr:first-child td {
@@ -220,12 +220,12 @@
 // the help of our collapse JavaScript plugin.
 
 .panel-group {
-  margin-bottom: @line-height-computed;
+  margin-bottom: $line-height-computed;
 
   // Tighten up margin so it's only between panels
   .panel {
     margin-bottom: 0;
-    border-radius: @panel-border-radius;
+    border-radius: $panel-border-radius;
 
     + .panel {
       margin-top: 5px;
@@ -237,14 +237,14 @@
 
     + .panel-collapse > .panel-body,
     + .panel-collapse > .list-group {
-      border-top: 1px solid @panel-inner-border;
+      border-top: 1px solid $panel-inner-border;
     }
   }
 
   .panel-footer {
     border-top: 0;
     + .panel-collapse .panel-body {
-      border-bottom: 1px solid @panel-inner-border;
+      border-bottom: 1px solid $panel-inner-border;
     }
   }
 }
@@ -252,20 +252,20 @@
 
 // Contextual variations
 .panel-default {
-  .panel-variant(@panel-default-border; @panel-default-text; @panel-default-heading-bg; @panel-default-border);
+  @include panel-variant($panel-default-border, $panel-default-text, $panel-default-heading-bg, $panel-default-border);
 }
 .panel-primary {
-  .panel-variant(@panel-primary-border; @panel-primary-text; @panel-primary-heading-bg; @panel-primary-border);
+  @include panel-variant($panel-primary-border, $panel-primary-text, $panel-primary-heading-bg, $panel-primary-border);
 }
 .panel-success {
-  .panel-variant(@panel-success-border; @panel-success-text; @panel-success-heading-bg; @panel-success-border);
+  @include panel-variant($panel-success-border, $panel-success-text, $panel-success-heading-bg, $panel-success-border);
 }
 .panel-info {
-  .panel-variant(@panel-info-border; @panel-info-text; @panel-info-heading-bg; @panel-info-border);
+  @include panel-variant($panel-info-border, $panel-info-text, $panel-info-heading-bg, $panel-info-border);
 }
 .panel-warning {
-  .panel-variant(@panel-warning-border; @panel-warning-text; @panel-warning-heading-bg; @panel-warning-border);
+  @include panel-variant($panel-warning-border, $panel-warning-text, $panel-warning-heading-bg, $panel-warning-border);
 }
 .panel-danger {
-  .panel-variant(@panel-danger-border; @panel-danger-text; @panel-danger-heading-bg; @panel-danger-border);
+  @include panel-variant($panel-danger-border, $panel-danger-text, $panel-danger-heading-bg, $panel-danger-border);
 }
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_popovers.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_popovers.scss
new file mode 100644
index 00000000000..9b90a2e964e
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_popovers.scss
@@ -0,0 +1,131 @@
+//
+// Popovers
+// --------------------------------------------------
+
+
+.popover {
+  position: absolute;
+  top: 0;
+  left: 0;
+  z-index: $zindex-popover;
+  display: none;
+  max-width: $popover-max-width;
+  padding: 1px;
+  // Our parent element can be arbitrary since popovers are by default inserted as a sibling of their target element.
+  // So reset our font and text properties to avoid inheriting weird values.
+  @include reset-text;
+  font-size: $font-size-base;
+
+  background-color: $popover-bg;
+  background-clip: padding-box;
+  border: 1px solid $popover-fallback-border-color;
+  border: 1px solid $popover-border-color;
+  border-radius: $border-radius-large;
+  @include box-shadow(0 5px 10px rgba(0,0,0,.2));
+
+  // Offset the popover to account for the popover arrow
+  &.top     { margin-top: -$popover-arrow-width; }
+  &.right   { margin-left: $popover-arrow-width; }
+  &.bottom  { margin-top: $popover-arrow-width; }
+  &.left    { margin-left: -$popover-arrow-width; }
+}
+
+.popover-title {
+  margin: 0; // reset heading margin
+  padding: 8px 14px;
+  font-size: $font-size-base;
+  background-color: $popover-title-bg;
+  border-bottom: 1px solid darken($popover-title-bg, 5%);
+  border-radius: ($border-radius-large - 1) ($border-radius-large - 1) 0 0;
+}
+
+.popover-content {
+  padding: 9px 14px;
+}
+
+// Arrows
+//
+// .arrow is outer, .arrow:after is inner
+
+.popover > .arrow {
+  &,
+  &:after {
+    position: absolute;
+    display: block;
+    width: 0;
+    height: 0;
+    border-color: transparent;
+    border-style: solid;
+  }
+}
+.popover > .arrow {
+  border-width: $popover-arrow-outer-width;
+}
+.popover > .arrow:after {
+  border-width: $popover-arrow-width;
+  content: "";
+}
+
+.popover {
+  &.top > .arrow {
+    left: 50%;
+    margin-left: -$popover-arrow-outer-width;
+    border-bottom-width: 0;
+    border-top-color: $popover-arrow-outer-fallback-color; // IE8 fallback
+    border-top-color: $popover-arrow-outer-color;
+    bottom: -$popover-arrow-outer-width;
+    &:after {
+      content: " ";
+      bottom: 1px;
+      margin-left: -$popover-arrow-width;
+      border-bottom-width: 0;
+      border-top-color: $popover-arrow-color;
+    }
+  }
+  &.right > .arrow {
+    top: 50%;
+    left: -$popover-arrow-outer-width;
+    margin-top: -$popover-arrow-outer-width;
+    border-left-width: 0;
+    border-right-color: $popover-arrow-outer-fallback-color; // IE8 fallback
+    border-right-color: $popover-arrow-outer-color;
+    &:after {
+      content: " ";
+      left: 1px;
+      bottom: -$popover-arrow-width;
+      border-left-width: 0;
+      border-right-color: $popover-arrow-color;
+    }
+  }
+  &.bottom > .arrow {
+    left: 50%;
+    margin-left: -$popover-arrow-outer-width;
+    border-top-width: 0;
+    border-bottom-color: $popover-arrow-outer-fallback-color; // IE8 fallback
+    border-bottom-color: $popover-arrow-outer-color;
+    top: -$popover-arrow-outer-width;
+    &:after {
+      content: " ";
+      top: 1px;
+      margin-left: -$popover-arrow-width;
+      border-top-width: 0;
+      border-bottom-color: $popover-arrow-color;
+    }
+  }
+
+  &.left > .arrow {
+    top: 50%;
+    right: -$popover-arrow-outer-width;
+    margin-top: -$popover-arrow-outer-width;
+    border-right-width: 0;
+    border-left-color: $popover-arrow-outer-fallback-color; // IE8 fallback
+    border-left-color: $popover-arrow-outer-color;
+    &:after {
+      content: " ";
+      right: 1px;
+      border-right-width: 0;
+      border-left-color: $popover-arrow-color;
+      bottom: -$popover-arrow-width;
+    }
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/less/print.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_print.scss
index 66e54ab489e..66e54ab489e 100644
--- a/addons/web/static/lib/bootstrap/less/print.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_print.scss
diff --git a/addons/web/static/lib/bootstrap/less/progress-bars.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_progress-bars.scss
index 8868a1feef0..343df6323c5 100644
--- a/addons/web/static/lib/bootstrap/less/progress-bars.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_progress-bars.scss
@@ -25,11 +25,11 @@
 // Outer container
 .progress {
   overflow: hidden;
-  height: @line-height-computed;
-  margin-bottom: @line-height-computed;
-  background-color: @progress-bg;
-  border-radius: @progress-border-radius;
-  .box-shadow(inset 0 1px 2px rgba(0,0,0,.1));
+  height: $line-height-computed;
+  margin-bottom: $line-height-computed;
+  background-color: $progress-bg;
+  border-radius: $progress-border-radius;
+  @include box-shadow(inset 0 1px 2px rgba(0,0,0,.1));
 }
 
 // Bar of progress
@@ -37,13 +37,13 @@
   float: left;
   width: 0%;
   height: 100%;
-  font-size: @font-size-small;
-  line-height: @line-height-computed;
-  color: @progress-bar-color;
+  font-size: $font-size-small;
+  line-height: $line-height-computed;
+  color: $progress-bar-color;
   text-align: center;
-  background-color: @progress-bar-bg;
-  .box-shadow(inset 0 -1px 0 rgba(0,0,0,.15));
-  .transition(width .6s ease);
+  background-color: $progress-bar-bg;
+  @include box-shadow(inset 0 -1px 0 rgba(0,0,0,.15));
+  @include transition(width .6s ease);
 }
 
 // Striped bars
@@ -53,7 +53,7 @@
 // `.progress-bar`.
 .progress-striped .progress-bar,
 .progress-bar-striped {
-  #gradient > .striped();
+  @include gradient-striped;
   background-size: 40px 40px;
 }
 
@@ -63,7 +63,7 @@
 // `.progress-bar.active` approach.
 .progress.active .progress-bar,
 .progress-bar.active {
-  .animation(progress-bar-stripes 2s linear infinite);
+  @include animation(progress-bar-stripes 2s linear infinite);
 }
 
 
@@ -71,17 +71,17 @@
 // -------------------------
 
 .progress-bar-success {
-  .progress-bar-variant(@progress-bar-success-bg);
+  @include progress-bar-variant($progress-bar-success-bg);
 }
 
 .progress-bar-info {
-  .progress-bar-variant(@progress-bar-info-bg);
+  @include progress-bar-variant($progress-bar-info-bg);
 }
 
 .progress-bar-warning {
-  .progress-bar-variant(@progress-bar-warning-bg);
+  @include progress-bar-variant($progress-bar-warning-bg);
 }
 
 .progress-bar-danger {
-  .progress-bar-variant(@progress-bar-danger-bg);
+  @include progress-bar-variant($progress-bar-danger-bg);
 }
diff --git a/addons/web/static/lib/bootstrap/less/responsive-embed.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_responsive-embed.scss
index 080a5118fe9..080a5118fe9 100644
--- a/addons/web/static/lib/bootstrap/less/responsive-embed.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_responsive-embed.scss
diff --git a/addons/web/static/lib/bootstrap/less/responsive-utilities.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_responsive-utilities.scss
index b1db31d7bfc..f3f0c839bec 100644
--- a/addons/web/static/lib/bootstrap/less/responsive-utilities.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_responsive-utilities.scss
@@ -18,19 +18,20 @@
 // Source: http://timkadlec.com/2013/01/windows-phone-8-and-device-width/
 // Source: http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/
 
-@-ms-viewport {
-  width: device-width;
+@at-root {
+  @-ms-viewport {
+    width: device-width;
+  }
 }
 
 
 // Visibility utilities
 // Note: Deprecated .visible-xs, .visible-sm, .visible-md, and .visible-lg as of v3.2.0
-.visible-xs,
-.visible-sm,
-.visible-md,
-.visible-lg {
-  .responsive-invisibility();
-}
+
+@include responsive-invisibility('.visible-xs');
+@include responsive-invisibility('.visible-sm');
+@include responsive-invisibility('.visible-md');
+@include responsive-invisibility('.visible-lg');
 
 .visible-xs-block,
 .visible-xs-inline,
@@ -47,109 +48,96 @@
   display: none !important;
 }
 
-.visible-xs {
-  @media (max-width: @screen-xs-max) {
-    .responsive-visibility();
-  }
+@media (max-width: $screen-xs-max) {
+  @include responsive-visibility('.visible-xs');
 }
 .visible-xs-block {
-  @media (max-width: @screen-xs-max) {
+  @media (max-width: $screen-xs-max) {
     display: block !important;
   }
 }
 .visible-xs-inline {
-  @media (max-width: @screen-xs-max) {
+  @media (max-width: $screen-xs-max) {
     display: inline !important;
   }
 }
 .visible-xs-inline-block {
-  @media (max-width: @screen-xs-max) {
+  @media (max-width: $screen-xs-max) {
     display: inline-block !important;
   }
 }
 
-.visible-sm {
-  @media (min-width: @screen-sm-min) and (max-width: @screen-sm-max) {
-    .responsive-visibility();
-  }
+@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
+  @include responsive-visibility('.visible-sm');
 }
 .visible-sm-block {
-  @media (min-width: @screen-sm-min) and (max-width: @screen-sm-max) {
+  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
     display: block !important;
   }
 }
 .visible-sm-inline {
-  @media (min-width: @screen-sm-min) and (max-width: @screen-sm-max) {
+  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
     display: inline !important;
   }
 }
 .visible-sm-inline-block {
-  @media (min-width: @screen-sm-min) and (max-width: @screen-sm-max) {
+  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
     display: inline-block !important;
   }
 }
 
-.visible-md {
-  @media (min-width: @screen-md-min) and (max-width: @screen-md-max) {
-    .responsive-visibility();
-  }
+@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
+  @include responsive-visibility('.visible-md');
 }
 .visible-md-block {
-  @media (min-width: @screen-md-min) and (max-width: @screen-md-max) {
+  @media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
     display: block !important;
   }
 }
 .visible-md-inline {
-  @media (min-width: @screen-md-min) and (max-width: @screen-md-max) {
+  @media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
     display: inline !important;
   }
 }
 .visible-md-inline-block {
-  @media (min-width: @screen-md-min) and (max-width: @screen-md-max) {
+  @media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
     display: inline-block !important;
   }
 }
 
-.visible-lg {
-  @media (min-width: @screen-lg-min) {
-    .responsive-visibility();
-  }
+@media (min-width: $screen-lg-min) {
+  @include responsive-visibility('.visible-lg');
 }
 .visible-lg-block {
-  @media (min-width: @screen-lg-min) {
+  @media (min-width: $screen-lg-min) {
     display: block !important;
   }
 }
 .visible-lg-inline {
-  @media (min-width: @screen-lg-min) {
+  @media (min-width: $screen-lg-min) {
     display: inline !important;
   }
 }
 .visible-lg-inline-block {
-  @media (min-width: @screen-lg-min) {
+  @media (min-width: $screen-lg-min) {
     display: inline-block !important;
   }
 }
 
-.hidden-xs {
-  @media (max-width: @screen-xs-max) {
-    .responsive-invisibility();
-  }
+@media (max-width: $screen-xs-max) {
+  @include responsive-invisibility('.hidden-xs');
 }
-.hidden-sm {
-  @media (min-width: @screen-sm-min) and (max-width: @screen-sm-max) {
-    .responsive-invisibility();
-  }
+
+@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
+  @include responsive-invisibility('.hidden-sm');
 }
-.hidden-md {
-  @media (min-width: @screen-md-min) and (max-width: @screen-md-max) {
-    .responsive-invisibility();
-  }
+
+@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
+  @include responsive-invisibility('.hidden-md');
 }
-.hidden-lg {
-  @media (min-width: @screen-lg-min) {
-    .responsive-invisibility();
-  }
+
+@media (min-width: $screen-lg-min) {
+  @include responsive-invisibility('.hidden-lg');
 }
 
 
@@ -158,12 +146,11 @@
 // Media queries are placed on the inside to be mixin-friendly.
 
 // Note: Deprecated .visible-print as of v3.2.0
-.visible-print {
-  .responsive-invisibility();
 
-  @media print {
-    .responsive-visibility();
-  }
+@include responsive-invisibility('.visible-print');
+
+@media print {
+  @include responsive-visibility('.visible-print');
 }
 .visible-print-block {
   display: none !important;
@@ -187,8 +174,6 @@
   }
 }
 
-.hidden-print {
-  @media print {
-    .responsive-invisibility();
-  }
+@media print {
+  @include responsive-invisibility('.hidden-print');
 }
diff --git a/addons/web/static/lib/bootstrap/less/scaffolding.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_scaffolding.scss
index 64a29c6a5e7..362c7e2a133 100644
--- a/addons/web/static/lib/bootstrap/less/scaffolding.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_scaffolding.scss
@@ -9,11 +9,11 @@
 // For recommendations on resolving such conflicts, see
 // http://getbootstrap.com/getting-started/#third-box-sizing
 * {
-  .box-sizing(border-box);
+  @include box-sizing(border-box);
 }
 *:before,
 *:after {
-  .box-sizing(border-box);
+  @include box-sizing(border-box);
 }
 
 
@@ -25,11 +25,11 @@ html {
 }
 
 body {
-  font-family: @font-family-base;
-  font-size: @font-size-base;
-  line-height: @line-height-base;
-  color: @text-color;
-  background-color: @body-bg;
+  font-family: $font-family-base;
+  font-size: $font-size-base;
+  line-height: $line-height-base;
+  color: $text-color;
+  background-color: $body-bg;
 }
 
 // Reset fonts for relevant elements
@@ -46,17 +46,17 @@ textarea {
 // Links
 
 a {
-  color: @link-color;
+  color: $link-color;
   text-decoration: none;
 
   &:hover,
   &:focus {
-    color: @link-hover-color;
-    text-decoration: @link-hover-decoration;
+    color: $link-hover-color;
+    text-decoration: $link-hover-decoration;
   }
 
   &:focus {
-    .tab-focus();
+    @include tab-focus;
   }
 }
 
@@ -79,27 +79,27 @@ img {
 
 // Responsive images (ensure images don't scale beyond their parents)
 .img-responsive {
-  .img-responsive();
+  @include img-responsive;
 }
 
 // Rounded corners
 .img-rounded {
-  border-radius: @border-radius-large;
+  border-radius: $border-radius-large;
 }
 
 // Image thumbnails
 //
 // Heads up! This is mixin-ed into thumbnails.less for `.thumbnail`.
 .img-thumbnail {
-  padding: @thumbnail-padding;
-  line-height: @line-height-base;
-  background-color: @thumbnail-bg;
-  border: 1px solid @thumbnail-border;
-  border-radius: @thumbnail-border-radius;
-  .transition(all .2s ease-in-out);
+  padding: $thumbnail-padding;
+  line-height: $line-height-base;
+  background-color: $thumbnail-bg;
+  border: 1px solid $thumbnail-border;
+  border-radius: $thumbnail-border-radius;
+  @include transition(all .2s ease-in-out);
 
   // Keep them at most 100% wide
-  .img-responsive(inline-block);
+  @include img-responsive(inline-block);
 }
 
 // Perfect circle
@@ -111,10 +111,10 @@ img {
 // Horizontal rules
 
 hr {
-  margin-top:    @line-height-computed;
-  margin-bottom: @line-height-computed;
+  margin-top:    $line-height-computed;
+  margin-bottom: $line-height-computed;
   border: 0;
-  border-top: 1px solid @hr-border;
+  border-top: 1px solid $hr-border;
 }
 
 
diff --git a/addons/web/static/lib/bootstrap/less/tables.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_tables.scss
index 2242c036868..affcc58c0b0 100644
--- a/addons/web/static/lib/bootstrap/less/tables.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_tables.scss
@@ -4,12 +4,12 @@
 
 
 table {
-  background-color: @table-bg;
+  background-color: $table-bg;
 }
 caption {
-  padding-top: @table-cell-padding;
-  padding-bottom: @table-cell-padding;
-  color: @text-muted;
+  padding-top: $table-cell-padding;
+  padding-bottom: $table-cell-padding;
+  color: $text-muted;
   text-align: left;
 }
 th {
@@ -22,7 +22,7 @@ th {
 .table {
   width: 100%;
   max-width: 100%;
-  margin-bottom: @line-height-computed;
+  margin-bottom: $line-height-computed;
   // Cells
   > thead,
   > tbody,
@@ -30,17 +30,17 @@ th {
     > tr {
       > th,
       > td {
-        padding: @table-cell-padding;
-        line-height: @line-height-base;
+        padding: $table-cell-padding;
+        line-height: $line-height-base;
         vertical-align: top;
-        border-top: 1px solid @table-border-color;
+        border-top: 1px solid $table-border-color;
       }
     }
   }
   // Bottom align for column headings
   > thead > tr > th {
     vertical-align: bottom;
-    border-bottom: 2px solid @table-border-color;
+    border-bottom: 2px solid $table-border-color;
   }
   // Remove top border from thead by default
   > caption + thead,
@@ -55,12 +55,12 @@ th {
   }
   // Account for multiple tbody instances
   > tbody + tbody {
-    border-top: 2px solid @table-border-color;
+    border-top: 2px solid $table-border-color;
   }
 
   // Nesting
   .table {
-    background-color: @body-bg;
+    background-color: $body-bg;
   }
 }
 
@@ -74,7 +74,7 @@ th {
     > tr {
       > th,
       > td {
-        padding: @table-condensed-cell-padding;
+        padding: $table-condensed-cell-padding;
       }
     }
   }
@@ -86,14 +86,14 @@ th {
 // Add borders all around the table and between all the columns.
 
 .table-bordered {
-  border: 1px solid @table-border-color;
+  border: 1px solid $table-border-color;
   > thead,
   > tbody,
   > tfoot {
     > tr {
       > th,
       > td {
-        border: 1px solid @table-border-color;
+        border: 1px solid $table-border-color;
       }
     }
   }
@@ -112,7 +112,7 @@ th {
 
 .table-striped {
   > tbody > tr:nth-of-type(odd) {
-    background-color: @table-bg-accent;
+    background-color: $table-bg-accent;
   }
 }
 
@@ -123,7 +123,7 @@ th {
 
 .table-hover {
   > tbody > tr:hover {
-    background-color: @table-bg-hover;
+    background-color: $table-bg-hover;
   }
 }
 
@@ -155,11 +155,11 @@ table {
 // inheritance to nested tables.
 
 // Generate the contextual variants
-.table-row-variant(active; @table-bg-active);
-.table-row-variant(success; @state-success-bg);
-.table-row-variant(info; @state-info-bg);
-.table-row-variant(warning; @state-warning-bg);
-.table-row-variant(danger; @state-danger-bg);
+@include table-row-variant('active', $table-bg-active);
+@include table-row-variant('success', $state-success-bg);
+@include table-row-variant('info', $state-info-bg);
+@include table-row-variant('warning', $state-warning-bg);
+@include table-row-variant('danger', $state-danger-bg);
 
 
 // Responsive tables
@@ -172,12 +172,12 @@ table {
   overflow-x: auto;
   min-height: 0.01%; // Workaround for IE9 bug (see https://github.com/twbs/bootstrap/issues/14837)
 
-  @media screen and (max-width: @screen-xs-max) {
+  @media screen and (max-width: $screen-xs-max) {
     width: 100%;
-    margin-bottom: (@line-height-computed * 0.75);
+    margin-bottom: ($line-height-computed * 0.75);
     overflow-y: hidden;
     -ms-overflow-style: -ms-autohiding-scrollbar;
-    border: 1px solid @table-border-color;
+    border: 1px solid $table-border-color;
 
     // Tighten up spacing
     > .table {
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_theme.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_theme.scss
new file mode 100644
index 00000000000..c1b0e9c609f
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_theme.scss
@@ -0,0 +1,291 @@
+/*!
+ * Bootstrap v3.3.7 (http://getbootstrap.com)
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+
+//
+// Load core variables and mixins
+// --------------------------------------------------
+
+@import "variables";
+@import "mixins";
+
+
+//
+// Buttons
+// --------------------------------------------------
+
+// Common styles
+.btn-default,
+.btn-primary,
+.btn-success,
+.btn-info,
+.btn-warning,
+.btn-danger {
+  text-shadow: 0 -1px 0 rgba(0,0,0,.2);
+  $shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 1px rgba(0,0,0,.075);
+  @include box-shadow($shadow);
+
+  // Reset the shadow
+  &:active,
+  &.active {
+    @include box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+  }
+
+  &.disabled,
+  &[disabled],
+  fieldset[disabled] & {
+    @include box-shadow(none);
+  }
+
+  .badge {
+    text-shadow: none;
+  }
+}
+
+// Mixin for generating new styles
+@mixin btn-styles($btn-color: #555) {
+  @include gradient-vertical($start-color: $btn-color, $end-color: darken($btn-color, 12%));
+  @include reset-filter; // Disable gradients for IE9 because filter bleeds through rounded corners; see https://github.com/twbs/bootstrap/issues/10620
+  background-repeat: repeat-x;
+  border-color: darken($btn-color, 14%);
+
+  &:hover,
+  &:focus  {
+    background-color: darken($btn-color, 12%);
+    background-position: 0 -15px;
+  }
+
+  &:active,
+  &.active {
+    background-color: darken($btn-color, 12%);
+    border-color: darken($btn-color, 14%);
+  }
+
+  &.disabled,
+  &[disabled],
+  fieldset[disabled] & {
+    &,
+    &:hover,
+    &:focus,
+    &.focus,
+    &:active,
+    &.active {
+      background-color: darken($btn-color, 12%);
+      background-image: none;
+    }
+  }
+}
+
+// Common styles
+.btn {
+  // Remove the gradient for the pressed/active state
+  &:active,
+  &.active {
+    background-image: none;
+  }
+}
+
+// Apply the mixin to the buttons
+.btn-default { @include btn-styles($btn-default-bg); text-shadow: 0 1px 0 #fff; border-color: #ccc; }
+.btn-primary { @include btn-styles($btn-primary-bg); }
+.btn-success { @include btn-styles($btn-success-bg); }
+.btn-info    { @include btn-styles($btn-info-bg); }
+.btn-warning { @include btn-styles($btn-warning-bg); }
+.btn-danger  { @include btn-styles($btn-danger-bg); }
+
+
+//
+// Images
+// --------------------------------------------------
+
+.thumbnail,
+.img-thumbnail {
+  @include box-shadow(0 1px 2px rgba(0,0,0,.075));
+}
+
+
+//
+// Dropdowns
+// --------------------------------------------------
+
+.dropdown-menu > li > a:hover,
+.dropdown-menu > li > a:focus {
+  @include gradient-vertical($start-color: $dropdown-link-hover-bg, $end-color: darken($dropdown-link-hover-bg, 5%));
+  background-color: darken($dropdown-link-hover-bg, 5%);
+}
+.dropdown-menu > .active > a,
+.dropdown-menu > .active > a:hover,
+.dropdown-menu > .active > a:focus {
+  @include gradient-vertical($start-color: $dropdown-link-active-bg, $end-color: darken($dropdown-link-active-bg, 5%));
+  background-color: darken($dropdown-link-active-bg, 5%);
+}
+
+
+//
+// Navbar
+// --------------------------------------------------
+
+// Default navbar
+.navbar-default {
+  @include gradient-vertical($start-color: lighten($navbar-default-bg, 10%), $end-color: $navbar-default-bg);
+  @include reset-filter; // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered
+  border-radius: $navbar-border-radius;
+  $shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 5px rgba(0,0,0,.075);
+  @include box-shadow($shadow);
+
+  .navbar-nav > .open > a,
+  .navbar-nav > .active > a {
+    @include gradient-vertical($start-color: darken($navbar-default-link-active-bg, 5%), $end-color: darken($navbar-default-link-active-bg, 2%));
+    @include box-shadow(inset 0 3px 9px rgba(0,0,0,.075));
+  }
+}
+.navbar-brand,
+.navbar-nav > li > a {
+  text-shadow: 0 1px 0 rgba(255,255,255,.25);
+}
+
+// Inverted navbar
+.navbar-inverse {
+  @include gradient-vertical($start-color: lighten($navbar-inverse-bg, 10%), $end-color: $navbar-inverse-bg);
+  @include reset-filter; // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered; see https://github.com/twbs/bootstrap/issues/10257
+  border-radius: $navbar-border-radius;
+  .navbar-nav > .open > a,
+  .navbar-nav > .active > a {
+    @include gradient-vertical($start-color: $navbar-inverse-link-active-bg, $end-color: lighten($navbar-inverse-link-active-bg, 2.5%));
+    @include box-shadow(inset 0 3px 9px rgba(0,0,0,.25));
+  }
+
+  .navbar-brand,
+  .navbar-nav > li > a {
+    text-shadow: 0 -1px 0 rgba(0,0,0,.25);
+  }
+}
+
+// Undo rounded corners in static and fixed navbars
+.navbar-static-top,
+.navbar-fixed-top,
+.navbar-fixed-bottom {
+  border-radius: 0;
+}
+
+// Fix active state of dropdown items in collapsed mode
+@media (max-width: $grid-float-breakpoint-max) {
+  .navbar .navbar-nav .open .dropdown-menu > .active > a {
+    &,
+    &:hover,
+    &:focus {
+      color: #fff;
+      @include gradient-vertical($start-color: $dropdown-link-active-bg, $end-color: darken($dropdown-link-active-bg, 5%));
+    }
+  }
+}
+
+
+//
+// Alerts
+// --------------------------------------------------
+
+// Common styles
+.alert {
+  text-shadow: 0 1px 0 rgba(255,255,255,.2);
+  $shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 1px 2px rgba(0,0,0,.05);
+  @include box-shadow($shadow);
+}
+
+// Mixin for generating new styles
+@mixin alert-styles($color) {
+  @include gradient-vertical($start-color: $color, $end-color: darken($color, 7.5%));
+  border-color: darken($color, 15%);
+}
+
+// Apply the mixin to the alerts
+.alert-success    { @include alert-styles($alert-success-bg); }
+.alert-info       { @include alert-styles($alert-info-bg); }
+.alert-warning    { @include alert-styles($alert-warning-bg); }
+.alert-danger     { @include alert-styles($alert-danger-bg); }
+
+
+//
+// Progress bars
+// --------------------------------------------------
+
+// Give the progress background some depth
+.progress {
+  @include gradient-vertical($start-color: darken($progress-bg, 4%), $end-color: $progress-bg)
+}
+
+// Mixin for generating new styles
+@mixin progress-bar-styles($color) {
+  @include gradient-vertical($start-color: $color, $end-color: darken($color, 10%));
+}
+
+// Apply the mixin to the progress bars
+.progress-bar            { @include progress-bar-styles($progress-bar-bg); }
+.progress-bar-success    { @include progress-bar-styles($progress-bar-success-bg); }
+.progress-bar-info       { @include progress-bar-styles($progress-bar-info-bg); }
+.progress-bar-warning    { @include progress-bar-styles($progress-bar-warning-bg); }
+.progress-bar-danger     { @include progress-bar-styles($progress-bar-danger-bg); }
+
+// Reset the striped class because our mixins don't do multiple gradients and
+// the above custom styles override the new `.progress-bar-striped` in v3.2.0.
+.progress-bar-striped {
+  @include gradient-striped;
+}
+
+
+//
+// List groups
+// --------------------------------------------------
+
+.list-group {
+  border-radius: $border-radius-base;
+  @include box-shadow(0 1px 2px rgba(0,0,0,.075));
+}
+.list-group-item.active,
+.list-group-item.active:hover,
+.list-group-item.active:focus {
+  text-shadow: 0 -1px 0 darken($list-group-active-bg, 10%);
+  @include gradient-vertical($start-color: $list-group-active-bg, $end-color: darken($list-group-active-bg, 7.5%));
+  border-color: darken($list-group-active-border, 7.5%);
+
+  .badge {
+    text-shadow: none;
+  }
+}
+
+
+//
+// Panels
+// --------------------------------------------------
+
+// Common styles
+.panel {
+  @include box-shadow(0 1px 2px rgba(0,0,0,.05));
+}
+
+// Mixin for generating new styles
+@mixin panel-heading-styles($color) {
+  @include gradient-vertical($start-color: $color, $end-color: darken($color, 5%));
+}
+
+// Apply the mixin to the panel headings only
+.panel-default > .panel-heading   { @include panel-heading-styles($panel-default-heading-bg); }
+.panel-primary > .panel-heading   { @include panel-heading-styles($panel-primary-heading-bg); }
+.panel-success > .panel-heading   { @include panel-heading-styles($panel-success-heading-bg); }
+.panel-info > .panel-heading      { @include panel-heading-styles($panel-info-heading-bg); }
+.panel-warning > .panel-heading   { @include panel-heading-styles($panel-warning-heading-bg); }
+.panel-danger > .panel-heading    { @include panel-heading-styles($panel-danger-heading-bg); }
+
+
+//
+// Wells
+// --------------------------------------------------
+
+.well {
+  @include gradient-vertical($start-color: darken($well-bg, 5%), $end-color: $well-bg);
+  border-color: darken($well-bg, 10%);
+  $shadow: inset 0 1px 3px rgba(0,0,0,.05), 0 1px 0 rgba(255,255,255,.1);
+  @include box-shadow($shadow);
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_thumbnails.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_thumbnails.scss
new file mode 100644
index 00000000000..da0e1e76cf0
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_thumbnails.scss
@@ -0,0 +1,38 @@
+//
+// Thumbnails
+// --------------------------------------------------
+
+
+// Mixin and adjust the regular image class
+.thumbnail {
+  display: block;
+  padding: $thumbnail-padding;
+  margin-bottom: $line-height-computed;
+  line-height: $line-height-base;
+  background-color: $thumbnail-bg;
+  border: 1px solid $thumbnail-border;
+  border-radius: $thumbnail-border-radius;
+  @include transition(border .2s ease-in-out);
+
+  > img,
+  a > img {
+    @include img-responsive;
+    margin-left: auto;
+    margin-right: auto;
+  }
+
+  // [converter] extracted a&:hover, a&:focus, a&.active to a.thumbnail:hover, a.thumbnail:focus, a.thumbnail.active
+
+  // Image captions
+  .caption {
+    padding: $thumbnail-caption-padding;
+    color: $thumbnail-caption-color;
+  }
+}
+
+// Add a hover state for linked versions only
+a.thumbnail:hover,
+a.thumbnail:focus,
+a.thumbnail.active {
+  border-color: $link-color;
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_tooltip.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_tooltip.scss
new file mode 100644
index 00000000000..f0c16582743
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_tooltip.scss
@@ -0,0 +1,101 @@
+//
+// Tooltips
+// --------------------------------------------------
+
+
+// Base class
+.tooltip {
+  position: absolute;
+  z-index: $zindex-tooltip;
+  display: block;
+  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
+  // So reset our font and text properties to avoid inheriting weird values.
+  @include reset-text;
+  font-size: $font-size-small;
+
+  @include opacity(0);
+
+  &.in     { @include opacity($tooltip-opacity); }
+  &.top    { margin-top:  -3px; padding: $tooltip-arrow-width 0; }
+  &.right  { margin-left:  3px; padding: 0 $tooltip-arrow-width; }
+  &.bottom { margin-top:   3px; padding: $tooltip-arrow-width 0; }
+  &.left   { margin-left: -3px; padding: 0 $tooltip-arrow-width; }
+}
+
+// Wrapper for the tooltip content
+.tooltip-inner {
+  max-width: $tooltip-max-width;
+  padding: 3px 8px;
+  color: $tooltip-color;
+  text-align: center;
+  background-color: $tooltip-bg;
+  border-radius: $border-radius-base;
+}
+
+// Arrows
+.tooltip-arrow {
+  position: absolute;
+  width: 0;
+  height: 0;
+  border-color: transparent;
+  border-style: solid;
+}
+// Note: Deprecated .top-left, .top-right, .bottom-left, and .bottom-right as of v3.3.1
+.tooltip {
+  &.top .tooltip-arrow {
+    bottom: 0;
+    left: 50%;
+    margin-left: -$tooltip-arrow-width;
+    border-width: $tooltip-arrow-width $tooltip-arrow-width 0;
+    border-top-color: $tooltip-arrow-color;
+  }
+  &.top-left .tooltip-arrow {
+    bottom: 0;
+    right: $tooltip-arrow-width;
+    margin-bottom: -$tooltip-arrow-width;
+    border-width: $tooltip-arrow-width $tooltip-arrow-width 0;
+    border-top-color: $tooltip-arrow-color;
+  }
+  &.top-right .tooltip-arrow {
+    bottom: 0;
+    left: $tooltip-arrow-width;
+    margin-bottom: -$tooltip-arrow-width;
+    border-width: $tooltip-arrow-width $tooltip-arrow-width 0;
+    border-top-color: $tooltip-arrow-color;
+  }
+  &.right .tooltip-arrow {
+    top: 50%;
+    left: 0;
+    margin-top: -$tooltip-arrow-width;
+    border-width: $tooltip-arrow-width $tooltip-arrow-width $tooltip-arrow-width 0;
+    border-right-color: $tooltip-arrow-color;
+  }
+  &.left .tooltip-arrow {
+    top: 50%;
+    right: 0;
+    margin-top: -$tooltip-arrow-width;
+    border-width: $tooltip-arrow-width 0 $tooltip-arrow-width $tooltip-arrow-width;
+    border-left-color: $tooltip-arrow-color;
+  }
+  &.bottom .tooltip-arrow {
+    top: 0;
+    left: 50%;
+    margin-left: -$tooltip-arrow-width;
+    border-width: 0 $tooltip-arrow-width $tooltip-arrow-width;
+    border-bottom-color: $tooltip-arrow-color;
+  }
+  &.bottom-left .tooltip-arrow {
+    top: 0;
+    right: $tooltip-arrow-width;
+    margin-top: -$tooltip-arrow-width;
+    border-width: 0 $tooltip-arrow-width $tooltip-arrow-width;
+    border-bottom-color: $tooltip-arrow-color;
+  }
+  &.bottom-right .tooltip-arrow {
+    top: 0;
+    left: $tooltip-arrow-width;
+    margin-top: -$tooltip-arrow-width;
+    border-width: 0 $tooltip-arrow-width $tooltip-arrow-width;
+    border-bottom-color: $tooltip-arrow-color;
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/less/type.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_type.scss
index 0d4fee48486..620796adc1e 100644
--- a/addons/web/static/lib/bootstrap/less/type.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_type.scss
@@ -8,24 +8,24 @@
 
 h1, h2, h3, h4, h5, h6,
 .h1, .h2, .h3, .h4, .h5, .h6 {
-  font-family: @headings-font-family;
-  font-weight: @headings-font-weight;
-  line-height: @headings-line-height;
-  color: @headings-color;
+  font-family: $headings-font-family;
+  font-weight: $headings-font-weight;
+  line-height: $headings-line-height;
+  color: $headings-color;
 
   small,
   .small {
     font-weight: normal;
     line-height: 1;
-    color: @headings-small-color;
+    color: $headings-small-color;
   }
 }
 
 h1, .h1,
 h2, .h2,
 h3, .h3 {
-  margin-top: @line-height-computed;
-  margin-bottom: (@line-height-computed / 2);
+  margin-top: $line-height-computed;
+  margin-bottom: ($line-height-computed / 2);
 
   small,
   .small {
@@ -35,8 +35,8 @@ h3, .h3 {
 h4, .h4,
 h5, .h5,
 h6, .h6 {
-  margin-top: (@line-height-computed / 2);
-  margin-bottom: (@line-height-computed / 2);
+  margin-top: ($line-height-computed / 2);
+  margin-bottom: ($line-height-computed / 2);
 
   small,
   .small {
@@ -44,29 +44,29 @@ h6, .h6 {
   }
 }
 
-h1, .h1 { font-size: @font-size-h1; }
-h2, .h2 { font-size: @font-size-h2; }
-h3, .h3 { font-size: @font-size-h3; }
-h4, .h4 { font-size: @font-size-h4; }
-h5, .h5 { font-size: @font-size-h5; }
-h6, .h6 { font-size: @font-size-h6; }
+h1, .h1 { font-size: $font-size-h1; }
+h2, .h2 { font-size: $font-size-h2; }
+h3, .h3 { font-size: $font-size-h3; }
+h4, .h4 { font-size: $font-size-h4; }
+h5, .h5 { font-size: $font-size-h5; }
+h6, .h6 { font-size: $font-size-h6; }
 
 
 // Body text
 // -------------------------
 
 p {
-  margin: 0 0 (@line-height-computed / 2);
+  margin: 0 0 ($line-height-computed / 2);
 }
 
 .lead {
-  margin-bottom: @line-height-computed;
-  font-size: floor((@font-size-base * 1.15));
+  margin-bottom: $line-height-computed;
+  font-size: floor(($font-size-base * 1.15));
   font-weight: 300;
   line-height: 1.4;
 
-  @media (min-width: @screen-sm-min) {
-    font-size: (@font-size-base * 1.5);
+  @media (min-width: $screen-sm-min) {
+    font-size: ($font-size-base * 1.5);
   }
 }
 
@@ -77,12 +77,12 @@ p {
 // Ex: (12px small font / 14px base font) * 100% = about 85%
 small,
 .small {
-  font-size: floor((100% * @font-size-small / @font-size-base));
+  font-size: floor((100% * $font-size-small / $font-size-base));
 }
 
 mark,
 .mark {
-  background-color: @state-warning-bg;
+  background-color: $state-warning-bg;
   padding: .2em;
 }
 
@@ -100,24 +100,19 @@ mark,
 
 // Contextual colors
 .text-muted {
-  color: @text-muted;
-}
-.text-primary {
-  .text-emphasis-variant(@brand-primary);
-}
-.text-success {
-  .text-emphasis-variant(@state-success-text);
-}
-.text-info {
-  .text-emphasis-variant(@state-info-text);
-}
-.text-warning {
-  .text-emphasis-variant(@state-warning-text);
-}
-.text-danger {
-  .text-emphasis-variant(@state-danger-text);
+  color: $text-muted;
 }
 
+@include text-emphasis-variant('.text-primary', $brand-primary);
+
+@include text-emphasis-variant('.text-success', $state-success-text);
+
+@include text-emphasis-variant('.text-info', $state-info-text);
+
+@include text-emphasis-variant('.text-warning', $state-warning-text);
+
+@include text-emphasis-variant('.text-danger', $state-danger-text);
+
 // Contextual backgrounds
 // For now we'll leave these alongside the text classes until v4 when we can
 // safely shift things around (per SemVer rules).
@@ -125,29 +120,25 @@ mark,
   // Given the contrast here, this is the only class to have its color inverted
   // automatically.
   color: #fff;
-  .bg-variant(@brand-primary);
-}
-.bg-success {
-  .bg-variant(@state-success-bg);
-}
-.bg-info {
-  .bg-variant(@state-info-bg);
-}
-.bg-warning {
-  .bg-variant(@state-warning-bg);
-}
-.bg-danger {
-  .bg-variant(@state-danger-bg);
 }
+@include bg-variant('.bg-primary', $brand-primary);
+
+@include bg-variant('.bg-success', $state-success-bg);
+
+@include bg-variant('.bg-info', $state-info-bg);
+
+@include bg-variant('.bg-warning', $state-warning-bg);
+
+@include bg-variant('.bg-danger', $state-danger-bg);
 
 
 // Page header
 // -------------------------
 
 .page-header {
-  padding-bottom: ((@line-height-computed / 2) - 1);
-  margin: (@line-height-computed * 2) 0 @line-height-computed;
-  border-bottom: 1px solid @page-header-border-color;
+  padding-bottom: (($line-height-computed / 2) - 1);
+  margin: ($line-height-computed * 2) 0 $line-height-computed;
+  border-bottom: 1px solid $page-header-border-color;
 }
 
 
@@ -158,7 +149,7 @@ mark,
 ul,
 ol {
   margin-top: 0;
-  margin-bottom: (@line-height-computed / 2);
+  margin-bottom: ($line-height-computed / 2);
   ul,
   ol {
     margin-bottom: 0;
@@ -167,15 +158,20 @@ ol {
 
 // List options
 
-// Unstyled keeps list items block level, just removes default browser padding and list-style
-.list-unstyled {
+// [converter] extracted from `.list-unstyled` for libsass compatibility
+@mixin list-unstyled {
   padding-left: 0;
   list-style: none;
 }
+// [converter] extracted as `@mixin list-unstyled` for libsass compatibility
+.list-unstyled {
+  @include list-unstyled;
+}
+
 
 // Inline turns list items into inline-block
 .list-inline {
-  .list-unstyled();
+  @include list-unstyled;
   margin-left: -5px;
 
   > li {
@@ -188,11 +184,11 @@ ol {
 // Description Lists
 dl {
   margin-top: 0; // Remove browser default
-  margin-bottom: @line-height-computed;
+  margin-bottom: $line-height-computed;
 }
 dt,
 dd {
-  line-height: @line-height-base;
+  line-height: $line-height-base;
 }
 dt {
   font-weight: bold;
@@ -208,19 +204,19 @@ dd {
 
 .dl-horizontal {
   dd {
-    &:extend(.clearfix all); // Clear the floated `dt` if an empty `dd` is present
+    @include clearfix; // Clear the floated `dt` if an empty `dd` is present
   }
 
-  @media (min-width: @dl-horizontal-breakpoint) {
+  @media (min-width: $dl-horizontal-breakpoint) {
     dt {
       float: left;
-      width: (@dl-horizontal-offset - 20);
+      width: ($dl-horizontal-offset - 20);
       clear: left;
       text-align: right;
-      .text-overflow();
+      @include text-overflow;
     }
     dd {
-      margin-left: @dl-horizontal-offset;
+      margin-left: $dl-horizontal-offset;
     }
   }
 }
@@ -234,19 +230,19 @@ abbr[title],
 // Add data-* attribute to help out our tooltip plugin, per https://github.com/twbs/bootstrap/issues/5257
 abbr[data-original-title] {
   cursor: help;
-  border-bottom: 1px dotted @abbr-border-color;
+  border-bottom: 1px dotted $abbr-border-color;
 }
 .initialism {
   font-size: 90%;
-  .text-uppercase();
+  @extend .text-uppercase;
 }
 
 // Blockquotes
 blockquote {
-  padding: (@line-height-computed / 2) @line-height-computed;
-  margin: 0 0 @line-height-computed;
-  font-size: @blockquote-font-size;
-  border-left: 5px solid @blockquote-border-color;
+  padding: ($line-height-computed / 2) $line-height-computed;
+  margin: 0 0 $line-height-computed;
+  font-size: $blockquote-font-size;
+  border-left: 5px solid $blockquote-border-color;
 
   p,
   ul,
@@ -263,8 +259,8 @@ blockquote {
   .small {
     display: block;
     font-size: 80%; // back to default font-size
-    line-height: @line-height-base;
-    color: @blockquote-small-color;
+    line-height: $line-height-base;
+    color: $blockquote-small-color;
 
     &:before {
       content: '\2014 \00A0'; // em dash, nbsp
@@ -279,7 +275,7 @@ blockquote {
 blockquote.pull-right {
   padding-right: 15px;
   padding-left: 0;
-  border-right: 5px solid @blockquote-border-color;
+  border-right: 5px solid $blockquote-border-color;
   border-left: 0;
   text-align: right;
 
@@ -296,7 +292,7 @@ blockquote.pull-right {
 
 // Addresses
 address {
-  margin-bottom: @line-height-computed;
+  margin-bottom: $line-height-computed;
   font-style: normal;
-  line-height: @line-height-base;
+  line-height: $line-height-base;
 }
diff --git a/addons/web/static/lib/bootstrap/less/utilities.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_utilities.scss
index 7a8ca27a8ff..8c99c71643e 100644
--- a/addons/web/static/lib/bootstrap/less/utilities.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_utilities.scss
@@ -7,10 +7,10 @@
 // -------------------------
 
 .clearfix {
-  .clearfix();
+  @include clearfix;
 }
 .center-block {
-  .center-block();
+  @include center-block;
 }
 .pull-right {
   float: right !important;
@@ -34,7 +34,7 @@
   visibility: hidden;
 }
 .text-hide {
-  .text-hide();
+  @include text-hide;
 }
 
 
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/_variables.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/_variables.scss
new file mode 100644
index 00000000000..e0496852917
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_variables.scss
@@ -0,0 +1,874 @@
+$bootstrap-sass-asset-helper: false !default;
+//
+// Variables
+// --------------------------------------------------
+
+
+//== Colors
+//
+//## Gray and brand colors for use across Bootstrap.
+
+$gray-base:              #000 !default;
+$gray-darker:            lighten($gray-base, 13.5%) !default; // #222
+$gray-dark:              lighten($gray-base, 20%) !default;   // #333
+$gray:                   lighten($gray-base, 33.5%) !default; // #555
+$gray-light:             lighten($gray-base, 46.7%) !default; // #777
+$gray-lighter:           lighten($gray-base, 93.5%) !default; // #eee
+
+$brand-primary:         darken(#428bca, 6.5%) !default; // #337ab7
+$brand-success:         #5cb85c !default;
+$brand-info:            #5bc0de !default;
+$brand-warning:         #f0ad4e !default;
+$brand-danger:          #d9534f !default;
+
+
+//== Scaffolding
+//
+//## Settings for some of the most global styles.
+
+//** Background color for `<body>`.
+$body-bg:               #fff !default;
+//** Global text color on `<body>`.
+$text-color:            $gray-dark !default;
+
+//** Global textual link color.
+$link-color:            $brand-primary !default;
+//** Link hover color set via `darken()` function.
+$link-hover-color:      darken($link-color, 15%) !default;
+//** Link hover decoration.
+$link-hover-decoration: underline !default;
+
+
+//== Typography
+//
+//## Font, line-height, and color for body text, headings, and more.
+
+$font-family-sans-serif:  "Helvetica Neue", Helvetica, Arial, sans-serif !default;
+$font-family-serif:       Georgia, "Times New Roman", Times, serif !default;
+//** Default monospace fonts for `<code>`, `<kbd>`, and `<pre>`.
+$font-family-monospace:   Menlo, Monaco, Consolas, "Courier New", monospace !default;
+$font-family-base:        $font-family-sans-serif !default;
+
+$font-size-base:          14px !default;
+$font-size-large:         ceil(($font-size-base * 1.25)) !default; // ~18px
+$font-size-small:         ceil(($font-size-base * 0.85)) !default; // ~12px
+
+$font-size-h1:            floor(($font-size-base * 2.6)) !default; // ~36px
+$font-size-h2:            floor(($font-size-base * 2.15)) !default; // ~30px
+$font-size-h3:            ceil(($font-size-base * 1.7)) !default; // ~24px
+$font-size-h4:            ceil(($font-size-base * 1.25)) !default; // ~18px
+$font-size-h5:            $font-size-base !default;
+$font-size-h6:            ceil(($font-size-base * 0.85)) !default; // ~12px
+
+//** Unit-less `line-height` for use in components like buttons.
+$line-height-base:        1.428571429 !default; // 20/14
+//** Computed "line-height" (`font-size` * `line-height`) for use with `margin`, `padding`, etc.
+$line-height-computed:    floor(($font-size-base * $line-height-base)) !default; // ~20px
+
+//** By default, this inherits from the `<body>`.
+$headings-font-family:    inherit !default;
+$headings-font-weight:    500 !default;
+$headings-line-height:    1.1 !default;
+$headings-color:          inherit !default;
+
+
+//== Iconography
+//
+//## Specify custom location and filename of the included Glyphicons icon font. Useful for those including Bootstrap via Bower.
+
+//** Load fonts from this directory.
+
+// [converter] If $bootstrap-sass-asset-helper if used, provide path relative to the assets load path.
+// [converter] This is because some asset helpers, such as Sprockets, do not work with file-relative paths.
+$icon-font-path: if($bootstrap-sass-asset-helper, "bootstrap/", "../fonts/bootstrap/") !default;
+
+//** File name for all font files.
+$icon-font-name:          "glyphicons-halflings-regular" !default;
+//** Element ID within SVG icon file.
+$icon-font-svg-id:        "glyphicons_halflingsregular" !default;
+
+
+//== Components
+//
+//## Define common padding and border radius sizes and more. Values based on 14px text and 1.428 line-height (~20px to start).
+
+$padding-base-vertical:     6px !default;
+$padding-base-horizontal:   12px !default;
+
+$padding-large-vertical:    10px !default;
+$padding-large-horizontal:  16px !default;
+
+$padding-small-vertical:    5px !default;
+$padding-small-horizontal:  10px !default;
+
+$padding-xs-vertical:       1px !default;
+$padding-xs-horizontal:     5px !default;
+
+$line-height-large:         1.3333333 !default; // extra decimals for Win 8.1 Chrome
+$line-height-small:         1.5 !default;
+
+$border-radius-base:        4px !default;
+$border-radius-large:       6px !default;
+$border-radius-small:       3px !default;
+
+//** Global color for active items (e.g., navs or dropdowns).
+$component-active-color:    #fff !default;
+//** Global background color for active items (e.g., navs or dropdowns).
+$component-active-bg:       $brand-primary !default;
+
+//** Width of the `border` for generating carets that indicate dropdowns.
+$caret-width-base:          4px !default;
+//** Carets increase slightly in size for larger components.
+$caret-width-large:         5px !default;
+
+
+//== Tables
+//
+//## Customizes the `.table` component with basic values, each used across all table variations.
+
+//** Padding for `<th>`s and `<td>`s.
+$table-cell-padding:            8px !default;
+//** Padding for cells in `.table-condensed`.
+$table-condensed-cell-padding:  5px !default;
+
+//** Default background color used for all tables.
+$table-bg:                      transparent !default;
+//** Background color used for `.table-striped`.
+$table-bg-accent:               #f9f9f9 !default;
+//** Background color used for `.table-hover`.
+$table-bg-hover:                #f5f5f5 !default;
+$table-bg-active:               $table-bg-hover !default;
+
+//** Border color for table and cell borders.
+$table-border-color:            #ddd !default;
+
+
+//== Buttons
+//
+//## For each of Bootstrap's buttons, define text, background and border color.
+
+$btn-font-weight:                normal !default;
+
+$btn-default-color:              #333 !default;
+$btn-default-bg:                 #fff !default;
+$btn-default-border:             #ccc !default;
+
+$btn-primary-color:              #fff !default;
+$btn-primary-bg:                 $brand-primary !default;
+$btn-primary-border:             darken($btn-primary-bg, 5%) !default;
+
+$btn-success-color:              #fff !default;
+$btn-success-bg:                 $brand-success !default;
+$btn-success-border:             darken($btn-success-bg, 5%) !default;
+
+$btn-info-color:                 #fff !default;
+$btn-info-bg:                    $brand-info !default;
+$btn-info-border:                darken($btn-info-bg, 5%) !default;
+
+$btn-warning-color:              #fff !default;
+$btn-warning-bg:                 $brand-warning !default;
+$btn-warning-border:             darken($btn-warning-bg, 5%) !default;
+
+$btn-danger-color:               #fff !default;
+$btn-danger-bg:                  $brand-danger !default;
+$btn-danger-border:              darken($btn-danger-bg, 5%) !default;
+
+$btn-link-disabled-color:        $gray-light !default;
+
+// Allows for customizing button radius independently from global border radius
+$btn-border-radius-base:         $border-radius-base !default;
+$btn-border-radius-large:        $border-radius-large !default;
+$btn-border-radius-small:        $border-radius-small !default;
+
+
+//== Forms
+//
+//##
+
+//** `<input>` background color
+$input-bg:                       #fff !default;
+//** `<input disabled>` background color
+$input-bg-disabled:              $gray-lighter !default;
+
+//** Text color for `<input>`s
+$input-color:                    $gray !default;
+//** `<input>` border color
+$input-border:                   #ccc !default;
+
+// TODO: Rename `$input-border-radius` to `$input-border-radius-base` in v4
+//** Default `.form-control` border radius
+// This has no effect on `<select>`s in some browsers, due to the limited stylability of `<select>`s in CSS.
+$input-border-radius:            $border-radius-base !default;
+//** Large `.form-control` border radius
+$input-border-radius-large:      $border-radius-large !default;
+//** Small `.form-control` border radius
+$input-border-radius-small:      $border-radius-small !default;
+
+//** Border color for inputs on focus
+$input-border-focus:             #66afe9 !default;
+
+//** Placeholder text color
+$input-color-placeholder:        #999 !default;
+
+//** Default `.form-control` height
+$input-height-base:              ($line-height-computed + ($padding-base-vertical * 2) + 2) !default;
+//** Large `.form-control` height
+$input-height-large:             (ceil($font-size-large * $line-height-large) + ($padding-large-vertical * 2) + 2) !default;
+//** Small `.form-control` height
+$input-height-small:             (floor($font-size-small * $line-height-small) + ($padding-small-vertical * 2) + 2) !default;
+
+//** `.form-group` margin
+$form-group-margin-bottom:       15px !default;
+
+$legend-color:                   $gray-dark !default;
+$legend-border-color:            #e5e5e5 !default;
+
+//** Background color for textual input addons
+$input-group-addon-bg:           $gray-lighter !default;
+//** Border color for textual input addons
+$input-group-addon-border-color: $input-border !default;
+
+//** Disabled cursor for form controls and buttons.
+$cursor-disabled:                not-allowed !default;
+
+
+//== Dropdowns
+//
+//## Dropdown menu container and contents.
+
+//** Background for the dropdown menu.
+$dropdown-bg:                    #fff !default;
+//** Dropdown menu `border-color`.
+$dropdown-border:                rgba(0,0,0,.15) !default;
+//** Dropdown menu `border-color` **for IE8**.
+$dropdown-fallback-border:       #ccc !default;
+//** Divider color for between dropdown items.
+$dropdown-divider-bg:            #e5e5e5 !default;
+
+//** Dropdown link text color.
+$dropdown-link-color:            $gray-dark !default;
+//** Hover color for dropdown links.
+$dropdown-link-hover-color:      darken($gray-dark, 5%) !default;
+//** Hover background for dropdown links.
+$dropdown-link-hover-bg:         #f5f5f5 !default;
+
+//** Active dropdown menu item text color.
+$dropdown-link-active-color:     $component-active-color !default;
+//** Active dropdown menu item background color.
+$dropdown-link-active-bg:        $component-active-bg !default;
+
+//** Disabled dropdown menu item background color.
+$dropdown-link-disabled-color:   $gray-light !default;
+
+//** Text color for headers within dropdown menus.
+$dropdown-header-color:          $gray-light !default;
+
+//** Deprecated `$dropdown-caret-color` as of v3.1.0
+$dropdown-caret-color:           #000 !default;
+
+
+//-- Z-index master list
+//
+// Warning: Avoid customizing these values. They're used for a bird's eye view
+// of components dependent on the z-axis and are designed to all work together.
+//
+// Note: These variables are not generated into the Customizer.
+
+$zindex-navbar:            1000 !default;
+$zindex-dropdown:          1000 !default;
+$zindex-popover:           1060 !default;
+$zindex-tooltip:           1070 !default;
+$zindex-navbar-fixed:      1030 !default;
+$zindex-modal-background:  1040 !default;
+$zindex-modal:             1050 !default;
+
+
+//== Media queries breakpoints
+//
+//## Define the breakpoints at which your layout will change, adapting to different screen sizes.
+
+// Extra small screen / phone
+//** Deprecated `$screen-xs` as of v3.0.1
+$screen-xs:                  480px !default;
+//** Deprecated `$screen-xs-min` as of v3.2.0
+$screen-xs-min:              $screen-xs !default;
+//** Deprecated `$screen-phone` as of v3.0.1
+$screen-phone:               $screen-xs-min !default;
+
+// Small screen / tablet
+//** Deprecated `$screen-sm` as of v3.0.1
+$screen-sm:                  768px !default;
+$screen-sm-min:              $screen-sm !default;
+//** Deprecated `$screen-tablet` as of v3.0.1
+$screen-tablet:              $screen-sm-min !default;
+
+// Medium screen / desktop
+//** Deprecated `$screen-md` as of v3.0.1
+$screen-md:                  992px !default;
+$screen-md-min:              $screen-md !default;
+//** Deprecated `$screen-desktop` as of v3.0.1
+$screen-desktop:             $screen-md-min !default;
+
+// Large screen / wide desktop
+//** Deprecated `$screen-lg` as of v3.0.1
+$screen-lg:                  1200px !default;
+$screen-lg-min:              $screen-lg !default;
+//** Deprecated `$screen-lg-desktop` as of v3.0.1
+$screen-lg-desktop:          $screen-lg-min !default;
+
+// So media queries don't overlap when required, provide a maximum
+$screen-xs-max:              ($screen-sm-min - 1) !default;
+$screen-sm-max:              ($screen-md-min - 1) !default;
+$screen-md-max:              ($screen-lg-min - 1) !default;
+
+
+//== Grid system
+//
+//## Define your custom responsive grid.
+
+//** Number of columns in the grid.
+$grid-columns:              12 !default;
+//** Padding between columns. Gets divided in half for the left and right.
+$grid-gutter-width:         30px !default;
+// Navbar collapse
+//** Point at which the navbar becomes uncollapsed.
+$grid-float-breakpoint:     $screen-sm-min !default;
+//** Point at which the navbar begins collapsing.
+$grid-float-breakpoint-max: ($grid-float-breakpoint - 1) !default;
+
+
+//== Container sizes
+//
+//## Define the maximum width of `.container` for different screen sizes.
+
+// Small screen / tablet
+$container-tablet:             (720px + $grid-gutter-width) !default;
+//** For `$screen-sm-min` and up.
+$container-sm:                 $container-tablet !default;
+
+// Medium screen / desktop
+$container-desktop:            (940px + $grid-gutter-width) !default;
+//** For `$screen-md-min` and up.
+$container-md:                 $container-desktop !default;
+
+// Large screen / wide desktop
+$container-large-desktop:      (1140px + $grid-gutter-width) !default;
+//** For `$screen-lg-min` and up.
+$container-lg:                 $container-large-desktop !default;
+
+
+//== Navbar
+//
+//##
+
+// Basics of a navbar
+$navbar-height:                    50px !default;
+$navbar-margin-bottom:             $line-height-computed !default;
+$navbar-border-radius:             $border-radius-base !default;
+$navbar-padding-horizontal:        floor(($grid-gutter-width / 2)) !default;
+$navbar-padding-vertical:          (($navbar-height - $line-height-computed) / 2) !default;
+$navbar-collapse-max-height:       340px !default;
+
+$navbar-default-color:             #777 !default;
+$navbar-default-bg:                #f8f8f8 !default;
+$navbar-default-border:            darken($navbar-default-bg, 6.5%) !default;
+
+// Navbar links
+$navbar-default-link-color:                #777 !default;
+$navbar-default-link-hover-color:          #333 !default;
+$navbar-default-link-hover-bg:             transparent !default;
+$navbar-default-link-active-color:         #555 !default;
+$navbar-default-link-active-bg:            darken($navbar-default-bg, 6.5%) !default;
+$navbar-default-link-disabled-color:       #ccc !default;
+$navbar-default-link-disabled-bg:          transparent !default;
+
+// Navbar brand label
+$navbar-default-brand-color:               $navbar-default-link-color !default;
+$navbar-default-brand-hover-color:         darken($navbar-default-brand-color, 10%) !default;
+$navbar-default-brand-hover-bg:            transparent !default;
+
+// Navbar toggle
+$navbar-default-toggle-hover-bg:           #ddd !default;
+$navbar-default-toggle-icon-bar-bg:        #888 !default;
+$navbar-default-toggle-border-color:       #ddd !default;
+
+
+//=== Inverted navbar
+// Reset inverted navbar basics
+$navbar-inverse-color:                      lighten($gray-light, 15%) !default;
+$navbar-inverse-bg:                         #222 !default;
+$navbar-inverse-border:                     darken($navbar-inverse-bg, 10%) !default;
+
+// Inverted navbar links
+$navbar-inverse-link-color:                 lighten($gray-light, 15%) !default;
+$navbar-inverse-link-hover-color:           #fff !default;
+$navbar-inverse-link-hover-bg:              transparent !default;
+$navbar-inverse-link-active-color:          $navbar-inverse-link-hover-color !default;
+$navbar-inverse-link-active-bg:             darken($navbar-inverse-bg, 10%) !default;
+$navbar-inverse-link-disabled-color:        #444 !default;
+$navbar-inverse-link-disabled-bg:           transparent !default;
+
+// Inverted navbar brand label
+$navbar-inverse-brand-color:                $navbar-inverse-link-color !default;
+$navbar-inverse-brand-hover-color:          #fff !default;
+$navbar-inverse-brand-hover-bg:             transparent !default;
+
+// Inverted navbar toggle
+$navbar-inverse-toggle-hover-bg:            #333 !default;
+$navbar-inverse-toggle-icon-bar-bg:         #fff !default;
+$navbar-inverse-toggle-border-color:        #333 !default;
+
+
+//== Navs
+//
+//##
+
+//=== Shared nav styles
+$nav-link-padding:                          10px 15px !default;
+$nav-link-hover-bg:                         $gray-lighter !default;
+
+$nav-disabled-link-color:                   $gray-light !default;
+$nav-disabled-link-hover-color:             $gray-light !default;
+
+//== Tabs
+$nav-tabs-border-color:                     #ddd !default;
+
+$nav-tabs-link-hover-border-color:          $gray-lighter !default;
+
+$nav-tabs-active-link-hover-bg:             $body-bg !default;
+$nav-tabs-active-link-hover-color:          $gray !default;
+$nav-tabs-active-link-hover-border-color:   #ddd !default;
+
+$nav-tabs-justified-link-border-color:            #ddd !default;
+$nav-tabs-justified-active-link-border-color:     $body-bg !default;
+
+//== Pills
+$nav-pills-border-radius:                   $border-radius-base !default;
+$nav-pills-active-link-hover-bg:            $component-active-bg !default;
+$nav-pills-active-link-hover-color:         $component-active-color !default;
+
+
+//== Pagination
+//
+//##
+
+$pagination-color:                     $link-color !default;
+$pagination-bg:                        #fff !default;
+$pagination-border:                    #ddd !default;
+
+$pagination-hover-color:               $link-hover-color !default;
+$pagination-hover-bg:                  $gray-lighter !default;
+$pagination-hover-border:              #ddd !default;
+
+$pagination-active-color:              #fff !default;
+$pagination-active-bg:                 $brand-primary !default;
+$pagination-active-border:             $brand-primary !default;
+
+$pagination-disabled-color:            $gray-light !default;
+$pagination-disabled-bg:               #fff !default;
+$pagination-disabled-border:           #ddd !default;
+
+
+//== Pager
+//
+//##
+
+$pager-bg:                             $pagination-bg !default;
+$pager-border:                         $pagination-border !default;
+$pager-border-radius:                  15px !default;
+
+$pager-hover-bg:                       $pagination-hover-bg !default;
+
+$pager-active-bg:                      $pagination-active-bg !default;
+$pager-active-color:                   $pagination-active-color !default;
+
+$pager-disabled-color:                 $pagination-disabled-color !default;
+
+
+//== Jumbotron
+//
+//##
+
+$jumbotron-padding:              30px !default;
+$jumbotron-color:                inherit !default;
+$jumbotron-bg:                   $gray-lighter !default;
+$jumbotron-heading-color:        inherit !default;
+$jumbotron-font-size:            ceil(($font-size-base * 1.5)) !default;
+$jumbotron-heading-font-size:    ceil(($font-size-base * 4.5)) !default;
+
+
+//== Form states and alerts
+//
+//## Define colors for form feedback states and, by default, alerts.
+
+$state-success-text:             #3c763d !default;
+$state-success-bg:               #dff0d8 !default;
+$state-success-border:           darken(adjust-hue($state-success-bg, -10), 5%) !default;
+
+$state-info-text:                #31708f !default;
+$state-info-bg:                  #d9edf7 !default;
+$state-info-border:              darken(adjust-hue($state-info-bg, -10), 7%) !default;
+
+$state-warning-text:             #8a6d3b !default;
+$state-warning-bg:               #fcf8e3 !default;
+$state-warning-border:           darken(adjust-hue($state-warning-bg, -10), 5%) !default;
+
+$state-danger-text:              #a94442 !default;
+$state-danger-bg:                #f2dede !default;
+$state-danger-border:            darken(adjust-hue($state-danger-bg, -10), 5%) !default;
+
+
+//== Tooltips
+//
+//##
+
+//** Tooltip max width
+$tooltip-max-width:           200px !default;
+//** Tooltip text color
+$tooltip-color:               #fff !default;
+//** Tooltip background color
+$tooltip-bg:                  #000 !default;
+$tooltip-opacity:             .9 !default;
+
+//** Tooltip arrow width
+$tooltip-arrow-width:         5px !default;
+//** Tooltip arrow color
+$tooltip-arrow-color:         $tooltip-bg !default;
+
+
+//== Popovers
+//
+//##
+
+//** Popover body background color
+$popover-bg:                          #fff !default;
+//** Popover maximum width
+$popover-max-width:                   276px !default;
+//** Popover border color
+$popover-border-color:                rgba(0,0,0,.2) !default;
+//** Popover fallback border color
+$popover-fallback-border-color:       #ccc !default;
+
+//** Popover title background color
+$popover-title-bg:                    darken($popover-bg, 3%) !default;
+
+//** Popover arrow width
+$popover-arrow-width:                 10px !default;
+//** Popover arrow color
+$popover-arrow-color:                 $popover-bg !default;
+
+//** Popover outer arrow width
+$popover-arrow-outer-width:           ($popover-arrow-width + 1) !default;
+//** Popover outer arrow color
+$popover-arrow-outer-color:           fade_in($popover-border-color, 0.05) !default;
+//** Popover outer arrow fallback color
+$popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%) !default;
+
+
+//== Labels
+//
+//##
+
+//** Default label background color
+$label-default-bg:            $gray-light !default;
+//** Primary label background color
+$label-primary-bg:            $brand-primary !default;
+//** Success label background color
+$label-success-bg:            $brand-success !default;
+//** Info label background color
+$label-info-bg:               $brand-info !default;
+//** Warning label background color
+$label-warning-bg:            $brand-warning !default;
+//** Danger label background color
+$label-danger-bg:             $brand-danger !default;
+
+//** Default label text color
+$label-color:                 #fff !default;
+//** Default text color of a linked label
+$label-link-hover-color:      #fff !default;
+
+
+//== Modals
+//
+//##
+
+//** Padding applied to the modal body
+$modal-inner-padding:         15px !default;
+
+//** Padding applied to the modal title
+$modal-title-padding:         15px !default;
+//** Modal title line-height
+$modal-title-line-height:     $line-height-base !default;
+
+//** Background color of modal content area
+$modal-content-bg:                             #fff !default;
+//** Modal content border color
+$modal-content-border-color:                   rgba(0,0,0,.2) !default;
+//** Modal content border color **for IE8**
+$modal-content-fallback-border-color:          #999 !default;
+
+//** Modal backdrop background color
+$modal-backdrop-bg:           #000 !default;
+//** Modal backdrop opacity
+$modal-backdrop-opacity:      .5 !default;
+//** Modal header border color
+$modal-header-border-color:   #e5e5e5 !default;
+//** Modal footer border color
+$modal-footer-border-color:   $modal-header-border-color !default;
+
+$modal-lg:                    900px !default;
+$modal-md:                    600px !default;
+$modal-sm:                    300px !default;
+
+
+//== Alerts
+//
+//## Define alert colors, border radius, and padding.
+
+$alert-padding:               15px !default;
+$alert-border-radius:         $border-radius-base !default;
+$alert-link-font-weight:      bold !default;
+
+$alert-success-bg:            $state-success-bg !default;
+$alert-success-text:          $state-success-text !default;
+$alert-success-border:        $state-success-border !default;
+
+$alert-info-bg:               $state-info-bg !default;
+$alert-info-text:             $state-info-text !default;
+$alert-info-border:           $state-info-border !default;
+
+$alert-warning-bg:            $state-warning-bg !default;
+$alert-warning-text:          $state-warning-text !default;
+$alert-warning-border:        $state-warning-border !default;
+
+$alert-danger-bg:             $state-danger-bg !default;
+$alert-danger-text:           $state-danger-text !default;
+$alert-danger-border:         $state-danger-border !default;
+
+
+//== Progress bars
+//
+//##
+
+//** Background color of the whole progress component
+$progress-bg:                 #f5f5f5 !default;
+//** Progress bar text color
+$progress-bar-color:          #fff !default;
+//** Variable for setting rounded corners on progress bar.
+$progress-border-radius:      $border-radius-base !default;
+
+//** Default progress bar color
+$progress-bar-bg:             $brand-primary !default;
+//** Success progress bar color
+$progress-bar-success-bg:     $brand-success !default;
+//** Warning progress bar color
+$progress-bar-warning-bg:     $brand-warning !default;
+//** Danger progress bar color
+$progress-bar-danger-bg:      $brand-danger !default;
+//** Info progress bar color
+$progress-bar-info-bg:        $brand-info !default;
+
+
+//== List group
+//
+//##
+
+//** Background color on `.list-group-item`
+$list-group-bg:                 #fff !default;
+//** `.list-group-item` border color
+$list-group-border:             #ddd !default;
+//** List group border radius
+$list-group-border-radius:      $border-radius-base !default;
+
+//** Background color of single list items on hover
+$list-group-hover-bg:           #f5f5f5 !default;
+//** Text color of active list items
+$list-group-active-color:       $component-active-color !default;
+//** Background color of active list items
+$list-group-active-bg:          $component-active-bg !default;
+//** Border color of active list elements
+$list-group-active-border:      $list-group-active-bg !default;
+//** Text color for content within active list items
+$list-group-active-text-color:  lighten($list-group-active-bg, 40%) !default;
+
+//** Text color of disabled list items
+$list-group-disabled-color:      $gray-light !default;
+//** Background color of disabled list items
+$list-group-disabled-bg:         $gray-lighter !default;
+//** Text color for content within disabled list items
+$list-group-disabled-text-color: $list-group-disabled-color !default;
+
+$list-group-link-color:         #555 !default;
+$list-group-link-hover-color:   $list-group-link-color !default;
+$list-group-link-heading-color: #333 !default;
+
+
+//== Panels
+//
+//##
+
+$panel-bg:                    #fff !default;
+$panel-body-padding:          15px !default;
+$panel-heading-padding:       10px 15px !default;
+$panel-footer-padding:        $panel-heading-padding !default;
+$panel-border-radius:         $border-radius-base !default;
+
+//** Border color for elements within panels
+$panel-inner-border:          #ddd !default;
+$panel-footer-bg:             #f5f5f5 !default;
+
+$panel-default-text:          $gray-dark !default;
+$panel-default-border:        #ddd !default;
+$panel-default-heading-bg:    #f5f5f5 !default;
+
+$panel-primary-text:          #fff !default;
+$panel-primary-border:        $brand-primary !default;
+$panel-primary-heading-bg:    $brand-primary !default;
+
+$panel-success-text:          $state-success-text !default;
+$panel-success-border:        $state-success-border !default;
+$panel-success-heading-bg:    $state-success-bg !default;
+
+$panel-info-text:             $state-info-text !default;
+$panel-info-border:           $state-info-border !default;
+$panel-info-heading-bg:       $state-info-bg !default;
+
+$panel-warning-text:          $state-warning-text !default;
+$panel-warning-border:        $state-warning-border !default;
+$panel-warning-heading-bg:    $state-warning-bg !default;
+
+$panel-danger-text:           $state-danger-text !default;
+$panel-danger-border:         $state-danger-border !default;
+$panel-danger-heading-bg:     $state-danger-bg !default;
+
+
+//== Thumbnails
+//
+//##
+
+//** Padding around the thumbnail image
+$thumbnail-padding:           4px !default;
+//** Thumbnail background color
+$thumbnail-bg:                $body-bg !default;
+//** Thumbnail border color
+$thumbnail-border:            #ddd !default;
+//** Thumbnail border radius
+$thumbnail-border-radius:     $border-radius-base !default;
+
+//** Custom text color for thumbnail captions
+$thumbnail-caption-color:     $text-color !default;
+//** Padding around the thumbnail caption
+$thumbnail-caption-padding:   9px !default;
+
+
+//== Wells
+//
+//##
+
+$well-bg:                     #f5f5f5 !default;
+$well-border:                 darken($well-bg, 7%) !default;
+
+
+//== Badges
+//
+//##
+
+$badge-color:                 #fff !default;
+//** Linked badge text color on hover
+$badge-link-hover-color:      #fff !default;
+$badge-bg:                    $gray-light !default;
+
+//** Badge text color in active nav link
+$badge-active-color:          $link-color !default;
+//** Badge background color in active nav link
+$badge-active-bg:             #fff !default;
+
+$badge-font-weight:           bold !default;
+$badge-line-height:           1 !default;
+$badge-border-radius:         10px !default;
+
+
+//== Breadcrumbs
+//
+//##
+
+$breadcrumb-padding-vertical:   8px !default;
+$breadcrumb-padding-horizontal: 15px !default;
+//** Breadcrumb background color
+$breadcrumb-bg:                 #f5f5f5 !default;
+//** Breadcrumb text color
+$breadcrumb-color:              #ccc !default;
+//** Text color of current page in the breadcrumb
+$breadcrumb-active-color:       $gray-light !default;
+//** Textual separator for between breadcrumb elements
+$breadcrumb-separator:          "/" !default;
+
+
+//== Carousel
+//
+//##
+
+$carousel-text-shadow:                        0 1px 2px rgba(0,0,0,.6) !default;
+
+$carousel-control-color:                      #fff !default;
+$carousel-control-width:                      15% !default;
+$carousel-control-opacity:                    .5 !default;
+$carousel-control-font-size:                  20px !default;
+
+$carousel-indicator-active-bg:                #fff !default;
+$carousel-indicator-border-color:             #fff !default;
+
+$carousel-caption-color:                      #fff !default;
+
+
+//== Close
+//
+//##
+
+$close-font-weight:           bold !default;
+$close-color:                 #000 !default;
+$close-text-shadow:           0 1px 0 #fff !default;
+
+
+//== Code
+//
+//##
+
+$code-color:                  #c7254e !default;
+$code-bg:                     #f9f2f4 !default;
+
+$kbd-color:                   #fff !default;
+$kbd-bg:                      #333 !default;
+
+$pre-bg:                      #f5f5f5 !default;
+$pre-color:                   $gray-dark !default;
+$pre-border-color:            #ccc !default;
+$pre-scrollable-max-height:   340px !default;
+
+
+//== Type
+//
+//##
+
+//** Horizontal offset for forms and lists.
+$component-offset-horizontal: 180px !default;
+//** Text muted color
+$text-muted:                  $gray-light !default;
+//** Abbreviations and acronyms border color
+$abbr-border-color:           $gray-light !default;
+//** Headings small color
+$headings-small-color:        $gray-light !default;
+//** Blockquote small color
+$blockquote-small-color:      $gray-light !default;
+//** Blockquote font size
+$blockquote-font-size:        ($font-size-base * 1.25) !default;
+//** Blockquote border color
+$blockquote-border-color:     $gray-lighter !default;
+//** Page header border color
+$page-header-border-color:    $gray-lighter !default;
+//** Width of horizontal description list titles
+$dl-horizontal-offset:        $component-offset-horizontal !default;
+//** Point at which .dl-horizontal becomes horizontal
+$dl-horizontal-breakpoint:    $grid-float-breakpoint !default;
+//** Horizontal line color.
+$hr-border:                   $gray-lighter !default;
diff --git a/addons/web/static/lib/bootstrap/less/wells.less b/addons/web/static/lib/bootstrap/scss/bootstrap/_wells.scss
index 15d072b0cd0..b8657118a66 100644
--- a/addons/web/static/lib/bootstrap/less/wells.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/_wells.scss
@@ -8,10 +8,10 @@
   min-height: 20px;
   padding: 19px;
   margin-bottom: 20px;
-  background-color: @well-bg;
-  border: 1px solid @well-border;
-  border-radius: @border-radius-base;
-  .box-shadow(inset 0 1px 1px rgba(0,0,0,.05));
+  background-color: $well-bg;
+  border: 1px solid $well-border;
+  border-radius: $border-radius-base;
+  @include box-shadow(inset 0 1px 1px rgba(0,0,0,.05));
   blockquote {
     border-color: #ddd;
     border-color: rgba(0,0,0,.15);
@@ -21,9 +21,9 @@
 // Sizes
 .well-lg {
   padding: 24px;
-  border-radius: @border-radius-large;
+  border-radius: $border-radius-large;
 }
 .well-sm {
   padding: 9px;
-  border-radius: @border-radius-small;
+  border-radius: $border-radius-small;
 }
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_alerts.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_alerts.scss
new file mode 100644
index 00000000000..3faf0b5a507
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_alerts.scss
@@ -0,0 +1,14 @@
+// Alerts
+
+@mixin alert-variant($background, $border, $text-color) {
+  background-color: $background;
+  border-color: $border;
+  color: $text-color;
+
+  hr {
+    border-top-color: darken($border, 5%);
+  }
+  .alert-link {
+    color: darken($text-color, 10%);
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_background-variant.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_background-variant.scss
new file mode 100644
index 00000000000..4c7769e13a3
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_background-variant.scss
@@ -0,0 +1,12 @@
+// Contextual backgrounds
+
+// [converter] $parent hack
+@mixin bg-variant($parent, $color) {
+  #{$parent} {
+    background-color: $color;
+  }
+  a#{$parent}:hover,
+  a#{$parent}:focus {
+    background-color: darken($color, 10%);
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_border-radius.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_border-radius.scss
new file mode 100644
index 00000000000..ce194998750
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_border-radius.scss
@@ -0,0 +1,18 @@
+// Single side border-radius
+
+@mixin border-top-radius($radius) {
+  border-top-right-radius: $radius;
+   border-top-left-radius: $radius;
+}
+@mixin border-right-radius($radius) {
+  border-bottom-right-radius: $radius;
+     border-top-right-radius: $radius;
+}
+@mixin border-bottom-radius($radius) {
+  border-bottom-right-radius: $radius;
+   border-bottom-left-radius: $radius;
+}
+@mixin border-left-radius($radius) {
+  border-bottom-left-radius: $radius;
+     border-top-left-radius: $radius;
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_buttons.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_buttons.scss
new file mode 100644
index 00000000000..b93f84b2cb6
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_buttons.scss
@@ -0,0 +1,65 @@
+// Button variants
+//
+// Easily pump out default styles, as well as :hover, :focus, :active,
+// and disabled options for all buttons
+
+@mixin button-variant($color, $background, $border) {
+  color: $color;
+  background-color: $background;
+  border-color: $border;
+
+  &:focus,
+  &.focus {
+    color: $color;
+    background-color: darken($background, 10%);
+        border-color: darken($border, 25%);
+  }
+  &:hover {
+    color: $color;
+    background-color: darken($background, 10%);
+        border-color: darken($border, 12%);
+  }
+  &:active,
+  &.active,
+  .open > &.dropdown-toggle {
+    color: $color;
+    background-color: darken($background, 10%);
+        border-color: darken($border, 12%);
+
+    &:hover,
+    &:focus,
+    &.focus {
+      color: $color;
+      background-color: darken($background, 17%);
+          border-color: darken($border, 25%);
+    }
+  }
+  &:active,
+  &.active,
+  .open > &.dropdown-toggle {
+    background-image: none;
+  }
+  &.disabled,
+  &[disabled],
+  fieldset[disabled] & {
+    &:hover,
+    &:focus,
+    &.focus {
+      background-color: $background;
+          border-color: $border;
+    }
+  }
+
+  .badge {
+    color: $background;
+    background-color: $color;
+  }
+}
+
+// Button sizes
+@mixin button-size($padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) {
+  padding: $padding-vertical $padding-horizontal;
+  font-size: $font-size;
+  line-height: $line-height;
+  border-radius: $border-radius;
+}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/center-block.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_center-block.scss
index d18d6de9ed6..e06fb5e276e 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/center-block.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_center-block.scss
@@ -1,6 +1,6 @@
 // Center-align a block level element
 
-.center-block() {
+@mixin center-block() {
   display: block;
   margin-left: auto;
   margin-right: auto;
diff --git a/addons/web/static/lib/bootstrap/less/mixins/clearfix.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_clearfix.scss
index 3f7a3820c1c..dc3e2ab426e 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/clearfix.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_clearfix.scss
@@ -10,7 +10,7 @@
 //
 // Source: http://nicolasgallagher.com/micro-clearfix-hack/
 
-.clearfix() {
+@mixin clearfix() {
   &:before,
   &:after {
     content: " "; // 1
diff --git a/addons/web/static/lib/bootstrap/less/mixins/forms.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_forms.scss
index 6f55ed96708..277aa5f8e18 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/forms.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_forms.scss
@@ -3,7 +3,7 @@
 // Used in forms.less to generate the form validation CSS for warnings, errors,
 // and successes.
 
-.form-control-validation(@text-color: #555; @border-color: #ccc; @background-color: #f5f5f5) {
+@mixin form-control-validation($text-color: #555, $border-color: #ccc, $background-color: #f5f5f5) {
   // Color the label and help text
   .help-block,
   .control-label,
@@ -15,27 +15,27 @@
   &.checkbox label,
   &.radio-inline label,
   &.checkbox-inline label  {
-    color: @text-color;
+    color: $text-color;
   }
   // Set the border and box shadow on specific inputs to match
   .form-control {
-    border-color: @border-color;
-    .box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
+    border-color: $border-color;
+    @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
     &:focus {
-      border-color: darken(@border-color, 10%);
-      @shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten(@border-color, 20%);
-      .box-shadow(@shadow);
+      border-color: darken($border-color, 10%);
+      $shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten($border-color, 20%);
+      @include box-shadow($shadow);
     }
   }
   // Set validation states also for addons
   .input-group-addon {
-    color: @text-color;
-    border-color: @border-color;
-    background-color: @background-color;
+    color: $text-color;
+    border-color: $border-color;
+    background-color: $background-color;
   }
   // Optional feedback icon
   .form-control-feedback {
-    color: @text-color;
+    color: $text-color;
   }
 }
 
@@ -43,7 +43,7 @@
 // Form control focus state
 //
 // Generate a customized focus state and for any input with the specified color,
-// which defaults to the `@input-border-focus` variable.
+// which defaults to the `$input-border-focus` variable.
 //
 // We highly encourage you to not customize the default value, but instead use
 // this to tweak colors on an as-needed basis. This aesthetic change is based on
@@ -52,12 +52,12 @@
 //
 // Example usage: change the default blue border and shadow to white for better
 // contrast against a dark gray background.
-.form-control-focus(@color: @input-border-focus) {
-  @color-rgba: rgba(red(@color), green(@color), blue(@color), .6);
+@mixin form-control-focus($color: $input-border-focus) {
+  $color-rgba: rgba(red($color), green($color), blue($color), .6);
   &:focus {
-    border-color: @color;
+    border-color: $color;
     outline: 0;
-    .box-shadow(~"inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px @{color-rgba}");
+    @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px $color-rgba);
   }
 }
 
@@ -66,20 +66,23 @@
 // Relative text size, padding, and border-radii changes for form controls. For
 // horizontal sizing, wrap controls in the predefined grid classes. `<select>`
 // element gets special love because it's special, and that's a fact!
-.input-size(@input-height; @padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
-  height: @input-height;
-  padding: @padding-vertical @padding-horizontal;
-  font-size: @font-size;
-  line-height: @line-height;
-  border-radius: @border-radius;
+// [converter] $parent hack
+@mixin input-size($parent, $input-height, $padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) {
+  #{$parent} {
+    height: $input-height;
+    padding: $padding-vertical $padding-horizontal;
+    font-size: $font-size;
+    line-height: $line-height;
+    border-radius: $border-radius;
+  }
 
-  select& {
-    height: @input-height;
-    line-height: @input-height;
+  select#{$parent} {
+    height: $input-height;
+    line-height: $input-height;
   }
 
-  textarea&,
-  select[multiple]& {
+  textarea#{$parent},
+  select[multiple]#{$parent} {
     height: auto;
   }
 }
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_gradients.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_gradients.scss
new file mode 100644
index 00000000000..a8939f5ae64
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_gradients.scss
@@ -0,0 +1,58 @@
+// Gradients
+
+
+
+// Horizontal gradient, from left to right
+//
+// Creates two color stops, start and end, by specifying a color and position for each color stop.
+// Color stops are not available in IE9 and below.
+@mixin gradient-horizontal($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
+  background-image: -webkit-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // Safari 5.1-6, Chrome 10+
+  background-image: -o-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // Opera 12
+  background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down
+}
+
+// Vertical gradient, from top to bottom
+//
+// Creates two color stops, start and end, by specifying a color and position for each color stop.
+// Color stops are not available in IE9 and below.
+@mixin gradient-vertical($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
+  background-image: -webkit-linear-gradient(top, $start-color $start-percent, $end-color $end-percent);  // Safari 5.1-6, Chrome 10+
+  background-image: -o-linear-gradient(top, $start-color $start-percent, $end-color $end-percent);  // Opera 12
+  background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+  background-repeat: repeat-x;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down
+}
+
+@mixin gradient-directional($start-color: #555, $end-color: #333, $deg: 45deg) {
+  background-repeat: repeat-x;
+  background-image: -webkit-linear-gradient($deg, $start-color, $end-color); // Safari 5.1-6, Chrome 10+
+  background-image: -o-linear-gradient($deg, $start-color, $end-color); // Opera 12
+  background-image: linear-gradient($deg, $start-color, $end-color); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+}
+@mixin gradient-horizontal-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
+  background-image: -webkit-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);
+  background-image: -o-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);
+  background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);
+  background-repeat: no-repeat;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down, gets no color-stop at all for proper fallback
+}
+@mixin gradient-vertical-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
+  background-image: -webkit-linear-gradient($start-color, $mid-color $color-stop, $end-color);
+  background-image: -o-linear-gradient($start-color, $mid-color $color-stop, $end-color);
+  background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);
+  background-repeat: no-repeat;
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down, gets no color-stop at all for proper fallback
+}
+@mixin gradient-radial($inner-color: #555, $outer-color: #333) {
+  background-image: -webkit-radial-gradient(circle, $inner-color, $outer-color);
+  background-image: radial-gradient(circle, $inner-color, $outer-color);
+  background-repeat: no-repeat;
+}
+@mixin gradient-striped($color: rgba(255,255,255,.15), $angle: 45deg) {
+  background-image: -webkit-linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
+  background-image: -o-linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
+  background-image: linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_grid-framework.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_grid-framework.scss
new file mode 100644
index 00000000000..16d038c04f3
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_grid-framework.scss
@@ -0,0 +1,81 @@
+// Framework grid generation
+//
+// Used only by Bootstrap to generate the correct number of grid classes given
+// any value of `$grid-columns`.
+
+// [converter] This is defined recursively in LESS, but Sass supports real loops
+@mixin make-grid-columns($i: 1, $list: ".col-xs-#{$i}, .col-sm-#{$i}, .col-md-#{$i}, .col-lg-#{$i}") {
+  @for $i from (1 + 1) through $grid-columns {
+    $list: "#{$list}, .col-xs-#{$i}, .col-sm-#{$i}, .col-md-#{$i}, .col-lg-#{$i}";
+  }
+  #{$list} {
+    position: relative;
+    // Prevent columns from collapsing when empty
+    min-height: 1px;
+    // Inner gutter via padding
+    padding-left:  ceil(($grid-gutter-width / 2));
+    padding-right: floor(($grid-gutter-width / 2));
+  }
+}
+
+
+// [converter] This is defined recursively in LESS, but Sass supports real loops
+@mixin float-grid-columns($class, $i: 1, $list: ".col-#{$class}-#{$i}") {
+  @for $i from (1 + 1) through $grid-columns {
+    $list: "#{$list}, .col-#{$class}-#{$i}";
+  }
+  #{$list} {
+    float: left;
+  }
+}
+
+
+@mixin calc-grid-column($index, $class, $type) {
+  @if ($type == width) and ($index > 0) {
+    .col-#{$class}-#{$index} {
+      width: percentage(($index / $grid-columns));
+    }
+  }
+  @if ($type == push) and ($index > 0) {
+    .col-#{$class}-push-#{$index} {
+      left: percentage(($index / $grid-columns));
+    }
+  }
+  @if ($type == push) and ($index == 0) {
+    .col-#{$class}-push-0 {
+      left: auto;
+    }
+  }
+  @if ($type == pull) and ($index > 0) {
+    .col-#{$class}-pull-#{$index} {
+      right: percentage(($index / $grid-columns));
+    }
+  }
+  @if ($type == pull) and ($index == 0) {
+    .col-#{$class}-pull-0 {
+      right: auto;
+    }
+  }
+  @if ($type == offset) {
+    .col-#{$class}-offset-#{$index} {
+      margin-left: percentage(($index / $grid-columns));
+    }
+  }
+}
+
+// [converter] This is defined recursively in LESS, but Sass supports real loops
+@mixin loop-grid-columns($columns, $class, $type) {
+  @for $i from 0 through $columns {
+    @include calc-grid-column($i, $class, $type);
+  }
+}
+
+
+// Create grid for specific class
+@mixin make-grid($class) {
+  @include float-grid-columns($class);
+  @include loop-grid-columns($grid-columns, $class, width);
+  @include loop-grid-columns($grid-columns, $class, pull);
+  @include loop-grid-columns($grid-columns, $class, push);
+  @include loop-grid-columns($grid-columns, $class, offset);
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_grid.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_grid.scss
new file mode 100644
index 00000000000..59551dac1ed
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_grid.scss
@@ -0,0 +1,122 @@
+// Grid system
+//
+// Generate semantic grid columns with these mixins.
+
+// Centered container element
+@mixin container-fixed($gutter: $grid-gutter-width) {
+  margin-right: auto;
+  margin-left: auto;
+  padding-left:  floor(($gutter / 2));
+  padding-right: ceil(($gutter / 2));
+  @include clearfix;
+}
+
+// Creates a wrapper for a series of columns
+@mixin make-row($gutter: $grid-gutter-width) {
+  margin-left:  ceil(($gutter / -2));
+  margin-right: floor(($gutter / -2));
+  @include clearfix;
+}
+
+// Generate the extra small columns
+@mixin make-xs-column($columns, $gutter: $grid-gutter-width) {
+  position: relative;
+  float: left;
+  width: percentage(($columns / $grid-columns));
+  min-height: 1px;
+  padding-left:  ($gutter / 2);
+  padding-right: ($gutter / 2);
+}
+@mixin make-xs-column-offset($columns) {
+  margin-left: percentage(($columns / $grid-columns));
+}
+@mixin make-xs-column-push($columns) {
+  left: percentage(($columns / $grid-columns));
+}
+@mixin make-xs-column-pull($columns) {
+  right: percentage(($columns / $grid-columns));
+}
+
+// Generate the small columns
+@mixin make-sm-column($columns, $gutter: $grid-gutter-width) {
+  position: relative;
+  min-height: 1px;
+  padding-left:  ($gutter / 2);
+  padding-right: ($gutter / 2);
+
+  @media (min-width: $screen-sm-min) {
+    float: left;
+    width: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-sm-column-offset($columns) {
+  @media (min-width: $screen-sm-min) {
+    margin-left: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-sm-column-push($columns) {
+  @media (min-width: $screen-sm-min) {
+    left: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-sm-column-pull($columns) {
+  @media (min-width: $screen-sm-min) {
+    right: percentage(($columns / $grid-columns));
+  }
+}
+
+// Generate the medium columns
+@mixin make-md-column($columns, $gutter: $grid-gutter-width) {
+  position: relative;
+  min-height: 1px;
+  padding-left:  ($gutter / 2);
+  padding-right: ($gutter / 2);
+
+  @media (min-width: $screen-md-min) {
+    float: left;
+    width: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-md-column-offset($columns) {
+  @media (min-width: $screen-md-min) {
+    margin-left: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-md-column-push($columns) {
+  @media (min-width: $screen-md-min) {
+    left: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-md-column-pull($columns) {
+  @media (min-width: $screen-md-min) {
+    right: percentage(($columns / $grid-columns));
+  }
+}
+
+// Generate the large columns
+@mixin make-lg-column($columns, $gutter: $grid-gutter-width) {
+  position: relative;
+  min-height: 1px;
+  padding-left:  ($gutter / 2);
+  padding-right: ($gutter / 2);
+
+  @media (min-width: $screen-lg-min) {
+    float: left;
+    width: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-lg-column-offset($columns) {
+  @media (min-width: $screen-lg-min) {
+    margin-left: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-lg-column-push($columns) {
+  @media (min-width: $screen-lg-min) {
+    left: percentage(($columns / $grid-columns));
+  }
+}
+@mixin make-lg-column-pull($columns) {
+  @media (min-width: $screen-lg-min) {
+    right: percentage(($columns / $grid-columns));
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/hide-text.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_hide-text.scss
index 2bb84a3b444..1767e029c53 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/hide-text.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_hide-text.scss
@@ -7,8 +7,8 @@
 // Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
 
 // Deprecated as of v3.0.1 (has been removed in v4)
-.hide-text() {
-  font: ~"0/0" a;
+@mixin hide-text() {
+  font: 0/0 a;
   color: transparent;
   text-shadow: none;
   background-color: transparent;
@@ -16,6 +16,6 @@
 }
 
 // New mixin to use as of v3.0.1
-.text-hide() {
-  .hide-text();
+@mixin text-hide() {
+  @include hide-text;
 }
diff --git a/addons/web/static/lib/bootstrap/less/mixins/image.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_image.scss
index f233cb3e199..c8dcf5e9cd8 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/image.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_image.scss
@@ -6,8 +6,8 @@
 // Responsive image
 //
 // Keep images from scaling beyond the width of their parents.
-.img-responsive(@display: block) {
-  display: @display;
+@mixin img-responsive($display: block) {
+  display: $display;
   max-width: 100%; // Part 1: Set a maximum relative to the parent
   height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching
 }
@@ -17,8 +17,8 @@
 //
 // Short retina mixin for setting background-image and -size. Note that the
 // spelling of `min--moz-device-pixel-ratio` is intentional.
-.img-retina(@file-1x; @file-2x; @width-1x; @height-1x) {
-  background-image: url("@{file-1x}");
+@mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {
+  background-image: url(if($bootstrap-sass-asset-helper, twbs-image-path("#{$file-1x}"), "#{$file-1x}"));
 
   @media
   only screen and (-webkit-min-device-pixel-ratio: 2),
@@ -27,7 +27,7 @@
   only screen and (        min-device-pixel-ratio: 2),
   only screen and (                min-resolution: 192dpi),
   only screen and (                min-resolution: 2dppx) {
-    background-image: url("@{file-2x}");
-    background-size: @width-1x @height-1x;
+    background-image: url(if($bootstrap-sass-asset-helper, twbs-image-path("#{$file-2x}"), "#{$file-2x}"));
+    background-size: $width-1x $height-1x;
   }
 }
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_labels.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_labels.scss
new file mode 100644
index 00000000000..eda6dfd29ea
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_labels.scss
@@ -0,0 +1,12 @@
+// Labels
+
+@mixin label-variant($color) {
+  background-color: $color;
+
+  &[href] {
+    &:hover,
+    &:focus {
+      background-color: darken($color, 10%);
+    }
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_list-group.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_list-group.scss
new file mode 100644
index 00000000000..c478eeb31e3
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_list-group.scss
@@ -0,0 +1,32 @@
+// List Groups
+
+@mixin list-group-item-variant($state, $background, $color) {
+  .list-group-item-#{$state} {
+    color: $color;
+    background-color: $background;
+
+    // [converter] extracted a&, button& to a.list-group-item-#{$state}, button.list-group-item-#{$state}
+  }
+
+  a.list-group-item-#{$state},
+  button.list-group-item-#{$state} {
+    color: $color;
+
+    .list-group-item-heading {
+      color: inherit;
+    }
+
+    &:hover,
+    &:focus {
+      color: $color;
+      background-color: darken($background, 5%);
+    }
+    &.active,
+    &.active:hover,
+    &.active:focus {
+      color: #fff;
+      background-color: $color;
+      border-color: $color;
+    }
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/nav-divider.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_nav-divider.scss
index feb1e9ed0da..2e6da02a474 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/nav-divider.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_nav-divider.scss
@@ -2,9 +2,9 @@
 //
 // Dividers (basically an hr) within dropdowns and nav lists
 
-.nav-divider(@color: #e5e5e5) {
+@mixin nav-divider($color: #e5e5e5) {
   height: 1px;
-  margin: ((@line-height-computed / 2) - 1) 0;
+  margin: (($line-height-computed / 2) - 1) 0;
   overflow: hidden;
-  background-color: @color;
+  background-color: $color;
 }
diff --git a/addons/web/static/lib/bootstrap/less/mixins/nav-vertical-align.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_nav-vertical-align.scss
index d458c78613e..c8fbf1a7d67 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/nav-vertical-align.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_nav-vertical-align.scss
@@ -3,7 +3,7 @@
 // Vertically center elements in the navbar.
 // Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin.
 
-.navbar-vertical-align(@element-height) {
-  margin-top: ((@navbar-height - @element-height) / 2);
-  margin-bottom: ((@navbar-height - @element-height) / 2);
+@mixin navbar-vertical-align($element-height) {
+  margin-top: (($navbar-height - $element-height) / 2);
+  margin-bottom: (($navbar-height - $element-height) / 2);
 }
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_opacity.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_opacity.scss
new file mode 100644
index 00000000000..88e9a576abd
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_opacity.scss
@@ -0,0 +1,8 @@
+// Opacity
+
+@mixin opacity($opacity) {
+  opacity: $opacity;
+  // IE8 filter
+  $opacity-ie: ($opacity * 100);
+  filter: alpha(opacity=$opacity-ie);
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_pagination.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_pagination.scss
new file mode 100644
index 00000000000..d4a5404fce2
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_pagination.scss
@@ -0,0 +1,24 @@
+// Pagination
+
+@mixin pagination-size($padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) {
+  > li {
+    > a,
+    > span {
+      padding: $padding-vertical $padding-horizontal;
+      font-size: $font-size;
+      line-height: $line-height;
+    }
+    &:first-child {
+      > a,
+      > span {
+        @include border-left-radius($border-radius);
+      }
+    }
+    &:last-child {
+      > a,
+      > span {
+        @include border-right-radius($border-radius);
+      }
+    }
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_panels.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_panels.scss
new file mode 100644
index 00000000000..3ff31ae51ee
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_panels.scss
@@ -0,0 +1,24 @@
+// Panels
+
+@mixin panel-variant($border, $heading-text-color, $heading-bg-color, $heading-border) {
+  border-color: $border;
+
+  & > .panel-heading {
+    color: $heading-text-color;
+    background-color: $heading-bg-color;
+    border-color: $heading-border;
+
+    + .panel-collapse > .panel-body {
+      border-top-color: $border;
+    }
+    .badge {
+      color: $heading-bg-color;
+      background-color: $heading-text-color;
+    }
+  }
+  & > .panel-footer {
+    + .panel-collapse > .panel-body {
+      border-bottom-color: $border;
+    }
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/progress-bar.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_progress-bar.scss
index f07996a34db..90a62afc2d6 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/progress-bar.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_progress-bar.scss
@@ -1,10 +1,10 @@
 // Progress bars
 
-.progress-bar-variant(@color) {
-  background-color: @color;
+@mixin progress-bar-variant($color) {
+  background-color: $color;
 
   // Deprecated parent class requirement as of v3.2.0
   .progress-striped & {
-    #gradient > .striped();
+    @include gradient-striped;
   }
 }
diff --git a/addons/web/static/lib/bootstrap/less/mixins/reset-filter.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_reset-filter.scss
index 68cdb5e1860..bf73051200e 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/reset-filter.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_reset-filter.scss
@@ -3,6 +3,6 @@
 // When you need to remove a gradient background, do not forget to use this to reset
 // the IE filter for IE9 and below.
 
-.reset-filter() {
-  filter: e(%("progid:DXImageTransform.Microsoft.gradient(enabled = false)"));
+@mixin reset-filter() {
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
 }
diff --git a/addons/web/static/lib/bootstrap/less/mixins/reset-text.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_reset-text.scss
index 58dd4d19b4d..c9c28417fab 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/reset-text.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_reset-text.scss
@@ -1,11 +1,11 @@
-.reset-text() {
-  font-family: @font-family-base;
+@mixin reset-text() {
+  font-family: $font-family-base;
   // We deliberately do NOT reset font-size.
   font-style: normal;
   font-weight: normal;
   letter-spacing: normal;
   line-break: auto;
-  line-height: @line-height-base;
+  line-height: $line-height-base;
   text-align: left; // Fallback for where `start` is not supported
   text-align: start;
   text-decoration: none;
diff --git a/addons/web/static/lib/bootstrap/less/mixins/resize.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_resize.scss
index 3acd3afdbac..83fa6379179 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/resize.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_resize.scss
@@ -1,6 +1,6 @@
 // Resize anything
 
-.resizable(@direction) {
-  resize: @direction; // Options: horizontal, vertical, both
+@mixin resizable($direction) {
+  resize: $direction; // Options: horizontal, vertical, both
   overflow: auto; // Per CSS3 UI, `resize` only applies when `overflow` isn't `visible`
 }
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_responsive-visibility.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_responsive-visibility.scss
new file mode 100644
index 00000000000..cbdf7772397
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_responsive-visibility.scss
@@ -0,0 +1,21 @@
+// Responsive utilities
+
+//
+// More easily include all the states for responsive-utilities.less.
+// [converter] $parent hack
+@mixin responsive-visibility($parent) {
+  #{$parent} {
+    display: block !important;
+  }
+  table#{$parent}  { display: table !important; }
+  tr#{$parent}     { display: table-row !important; }
+  th#{$parent},
+  td#{$parent}     { display: table-cell !important; }
+}
+
+// [converter] $parent hack
+@mixin responsive-invisibility($parent) {
+  #{$parent} {
+    display: none !important;
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_size.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_size.scss
new file mode 100644
index 00000000000..abbe2463ce8
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_size.scss
@@ -0,0 +1,10 @@
+// Sizing shortcuts
+
+@mixin size($width, $height) {
+  width: $width;
+  height: $height;
+}
+
+@mixin square($size) {
+  @include size($size, $size);
+}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/tab-focus.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_tab-focus.scss
index d12d23629f5..f16ed6428aa 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/tab-focus.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_tab-focus.scss
@@ -1,6 +1,6 @@
 // WebKit-style focus
 
-.tab-focus() {
+@mixin tab-focus() {
   // WebKit-specific. Other browsers will keep their default outline style.
   // (Initially tried to also force default via `outline: initial`,
   // but that seems to erroneously remove the outline in Firefox altogether.)
diff --git a/addons/web/static/lib/bootstrap/less/mixins/table-row.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_table-row.scss
index 0f287f1a8bd..136795081eb 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/table-row.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_table-row.scss
@@ -1,28 +1,28 @@
 // Tables
 
-.table-row-variant(@state; @background) {
+@mixin table-row-variant($state, $background) {
   // Exact selectors below required to override `.table-striped` and prevent
   // inheritance to nested tables.
   .table > thead > tr,
   .table > tbody > tr,
   .table > tfoot > tr {
-    > td.@{state},
-    > th.@{state},
-    &.@{state} > td,
-    &.@{state} > th {
-      background-color: @background;
+    > td.#{$state},
+    > th.#{$state},
+    &.#{$state} > td,
+    &.#{$state} > th {
+      background-color: $background;
     }
   }
 
   // Hover states for `.table-hover`
   // Note: this is not available for cells or rows within `thead` or `tfoot`.
   .table-hover > tbody > tr {
-    > td.@{state}:hover,
-    > th.@{state}:hover,
-    &.@{state}:hover > td,
-    &:hover > .@{state},
-    &.@{state}:hover > th {
-      background-color: darken(@background, 5%);
+    > td.#{$state}:hover,
+    > th.#{$state}:hover,
+    &.#{$state}:hover > td,
+    &:hover > .#{$state},
+    &.#{$state}:hover > th {
+      background-color: darken($background, 5%);
     }
   }
 }
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_text-emphasis.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_text-emphasis.scss
new file mode 100644
index 00000000000..3b446c41524
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_text-emphasis.scss
@@ -0,0 +1,12 @@
+// Typography
+
+// [converter] $parent hack
+@mixin text-emphasis-variant($parent, $color) {
+  #{$parent} {
+    color: $color;
+  }
+  a#{$parent}:hover,
+  a#{$parent}:focus {
+    color: darken($color, 10%);
+  }
+}
diff --git a/addons/web/static/lib/bootstrap/less/mixins/text-overflow.less b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_text-overflow.scss
index c11ad2fb747..1593b25ea5c 100644
--- a/addons/web/static/lib/bootstrap/less/mixins/text-overflow.less
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_text-overflow.scss
@@ -1,7 +1,7 @@
 // Text overflow
 // Requires inline-block or block for proper styling
 
-.text-overflow() {
+@mixin text-overflow() {
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
diff --git a/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_vendor-prefixes.scss b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_vendor-prefixes.scss
new file mode 100644
index 00000000000..b3d0371fa86
--- /dev/null
+++ b/addons/web/static/lib/bootstrap/scss/bootstrap/mixins/_vendor-prefixes.scss
@@ -0,0 +1,222 @@
+// Vendor Prefixes
+//
+// All vendor mixins are deprecated as of v3.2.0 due to the introduction of
+// Autoprefixer in our Gruntfile. They have been removed in v4.
+
+// - Animations
+// - Backface visibility
+// - Box shadow
+// - Box sizing
+// - Content columns
+// - Hyphens
+// - Placeholder text
+// - Transformations
+// - Transitions
+// - User Select
+
+
+// Animations
+@mixin animation($animation) {
+  -webkit-animation: $animation;
+       -o-animation: $animation;
+          animation: $animation;
+}
+@mixin animation-name($name) {
+  -webkit-animation-name: $name;
+          animation-name: $name;
+}
+@mixin animation-duration($duration) {
+  -webkit-animation-duration: $duration;
+          animation-duration: $duration;
+}
+@mixin animation-timing-function($timing-function) {
+  -webkit-animation-timing-function: $timing-function;
+          animation-timing-function: $timing-function;
+}
+@mixin animation-delay($delay) {
+  -webkit-animation-delay: $delay;
+          animation-delay: $delay;
+}
+@mixin animation-iteration-count($iteration-count) {
+  -webkit-animation-iteration-count: $iteration-count;
+          animation-iteration-count: $iteration-count;
+}
+@mixin animation-direction($direction) {
+  -webkit-animation-direction: $direction;
+          animation-direction: $direction;
+}
+@mixin animation-fill-mode($fill-mode) {
+  -webkit-animation-fill-mode: $fill-mode;
+          animation-fill-mode: $fill-mode;
+}
+
+// Backface visibility
+// Prevent browsers from flickering when using CSS 3D transforms.
+// Default value is `visible`, but can be changed to `hidden`
+
+@mixin backface-visibility($visibility) {
+  -webkit-backface-visibility: $visibility;
+     -moz-backface-visibility: $visibility;
+          backface-visibility: $visibility;
+}
+
+// Drop shadows
+//
+// Note: Deprecated `.box-shadow()` as of v3.1.0 since all of Bootstrap's
+// supported browsers that have box shadow capabilities now support it.
+
+@mixin box-shadow($shadow...) {
+  -webkit-box-shadow: $shadow; // iOS <4.3 & Android <4.1
+          box-shadow: $shadow;
+}
+
+// Box sizing
+@mixin box-sizing($boxmodel) {
+  -webkit-box-sizing: $boxmodel;
+     -moz-box-sizing: $boxmodel;
+          box-sizing: $boxmodel;
+}
+
+// CSS3 Content Columns
+@mixin content-columns($column-count, $column-gap: $grid-gutter-width) {
+  -webkit-column-count: $column-count;
+     -moz-column-count: $column-count;
+          column-count: $column-count;
+  -webkit-column-gap: $column-gap;
+     -moz-column-gap: $column-gap;
+          column-gap: $column-gap;
+}
+
+// Optional hyphenation
+@mixin hyphens($mode: auto) {
+  word-wrap: break-word;
+  -webkit-hyphens: $mode;
+     -moz-hyphens: $mode;
+      -ms-hyphens: $mode; // IE10+
+       -o-hyphens: $mode;
+          hyphens: $mode;
+}
+
+// Placeholder text
+@mixin placeholder($color: $input-color-placeholder) {
+  // Firefox
+  &::-moz-placeholder {
+    color: $color;
+    opacity: 1; // Override Firefox's unusual default opacity; see https://github.com/twbs/bootstrap/pull/11526
+  }
+  &:-ms-input-placeholder { color: $color; } // Internet Explorer 10+
+  &::-webkit-input-placeholder  { color: $color; } // Safari and Chrome
+}
+
+// Transformations
+@mixin scale($ratio...) {
+  -webkit-transform: scale($ratio);
+      -ms-transform: scale($ratio); // IE9 only
+       -o-transform: scale($ratio);
+          transform: scale($ratio);
+}
+
+@mixin scaleX($ratio) {
+  -webkit-transform: scaleX($ratio);
+      -ms-transform: scaleX($ratio); // IE9 only
+       -o-transform: scaleX($ratio);
+          transform: scaleX($ratio);
+}
+@mixin scaleY($ratio) {
+  -webkit-transform: scaleY($ratio);
+      -ms-transform: scaleY($ratio); // IE9 only
+       -o-transform: scaleY($ratio);
+          transform: scaleY($ratio);
+}
+@mixin skew($x, $y) {
+  -webkit-transform: skewX($x) skewY($y);
+      -ms-transform: skewX($x) skewY($y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+
+       -o-transform: skewX($x) skewY($y);
+          transform: skewX($x) skewY($y);
+}
+@mixin translate($x, $y) {
+  -webkit-transform: translate($x, $y);
+      -ms-transform: translate($x, $y); // IE9 only
+       -o-transform: translate($x, $y);
+          transform: translate($x, $y);
+}
+@mixin translate3d($x, $y, $z) {
+  -webkit-transform: translate3d($x, $y, $z);
+          transform: translate3d($x, $y, $z);
+}
+@mixin rotate($degrees) {
+  -webkit-transform: rotate($degrees);
+      -ms-transform: rotate($degrees); // IE9 only
+       -o-transform: rotate($degrees);
+          transform: rotate($degrees);
+}
+@mixin rotateX($degrees) {
+  -webkit-transform: rotateX($degrees);
+      -ms-transform: rotateX($degrees); // IE9 only
+       -o-transform: rotateX($degrees);
+          transform: rotateX($degrees);
+}
+@mixin rotateY($degrees) {
+  -webkit-transform: rotateY($degrees);
+      -ms-transform: rotateY($degrees); // IE9 only
+       -o-transform: rotateY($degrees);
+          transform: rotateY($degrees);
+}
+@mixin perspective($perspective) {
+  -webkit-perspective: $perspective;
+     -moz-perspective: $perspective;
+          perspective: $perspective;
+}
+@mixin perspective-origin($perspective) {
+  -webkit-perspective-origin: $perspective;
+     -moz-perspective-origin: $perspective;
+          perspective-origin: $perspective;
+}
+@mixin transform-origin($origin) {
+  -webkit-transform-origin: $origin;
+     -moz-transform-origin: $origin;
+      -ms-transform-origin: $origin; // IE9 only
+          transform-origin: $origin;
+}
+
+
+// Transitions
+
+@mixin transition($transition...) {
+  -webkit-transition: $transition;
+       -o-transition: $transition;
+          transition: $transition;
+}
+@mixin transition-property($transition-property...) {
+  -webkit-transition-property: $transition-property;
+          transition-property: $transition-property;
+}
+@mixin transition-delay($transition-delay) {
+  -webkit-transition-delay: $transition-delay;
+          transition-delay: $transition-delay;
+}
+@mixin transition-duration($transition-duration...) {
+  -webkit-transition-duration: $transition-duration;
+          transition-duration: $transition-duration;
+}
+@mixin transition-timing-function($timing-function) {
+  -webkit-transition-timing-function: $timing-function;
+          transition-timing-function: $timing-function;
+}
+@mixin transition-transform($transition...) {
+  -webkit-transition: -webkit-transform $transition;
+     -moz-transition: -moz-transform $transition;
+       -o-transition: -o-transform $transition;
+          transition: transform $transition;
+}
+
+
+// User select
+// For selecting text on the page
+
+@mixin user-select($select) {
+  -webkit-user-select: $select;
+     -moz-user-select: $select;
+      -ms-user-select: $select; // IE10+
+          user-select: $select;
+}