[IMP] core: menu tip ux/ui improvement

We would like to make the "no item found" screens more appealing.

Before this commit, it shows a small help tip in the top-left
corner of the screen, just below the "Create" button.

With this commit, these help tips have been replaced by onboarding
screens, which consist of a picture and some text below, both of which
are horizontally centered.

The texts have been slightly changed, so that they are shorter and clearer.

Considered modules:

(A)
    account,
    account_asset,
    account_budget,
    account_test,
    account_voucher,
    analytic
(B)
    barcodes,
    base,
    base_automation,
    board
(C)
    calendar,
    contacts,
    crm
(D)
    delivery
(E)
    event
(F)
    fleet
(G)
    gamification,
    google_drive
(H)
    hr,
    hr_attendance,
    hr_contract,
    hr_expense,
    hr_gamification,
    hr_holidays,
    hr_payroll,
    hr_recruitment,
    hr_timesheet
(I)
    im_livechat
(L)
    l10n_fr_sale_closing,
    link_tracker,
    lunch
(M)
    mail,
    maintenance,
    mass_mailing,
    membership,
    mrp
(N)
    note
(P)
    payment,
    point_of_sale,
    post_mercury,
    pos_restaurant,
    product,
    project,
    purchase,
    purchase_requisition
(R)
    rating,
    repair,
    resource
(S)
    sale,
    sale_timesheet,
    sales_team,
    stock,
    stock_account,
    stock_landed_costs,
    stock_picking_batch,
    survey
(U)
    utm
(W)
    web,
    website,
    website_blog,
    website_customer,
    website_event_track,
    website_forum,
    website_quote,
    website_sale,
    website_sale_digital,
    website_slides

1 files changed, 4 insertions, 2 deletions

diff --git a/addons/web/static/src/js/views/graph/graph_renderer.js b/addons/web/static/src/js/views/graph/graph_renderer.js
index 178d3ef3bd5..4d51f8786d0 100644
--- a/addons/web/static/src/js/views/graph/graph_renderer.js
+++ b/addons/web/static/src/js/views/graph/graph_renderer.js
@@ -55,9 +55,12 @@ return AbstractRenderer.extend({
      * returning immediately, then wait a tiny interval before actually
      * displaying the data.
      *
+     * @override
+     * @private
      * @returns {Deferred} The _super deferred is actually resolved immediately
      */
     _render: function () {
+        this.$el.toggleClass('o_view_nocontent_container', !this.state.data.length);
         if (this.to_remove) {
             nv.utils.offWindowResize(this.to_remove);
         }
@@ -71,8 +74,7 @@ return AbstractRenderer.extend({
             this.$el.empty();
             this.$el.append(qweb.render('GraphView.error', {
                 title: _t("No data to display"),
-                description: _t("No data available for this chart. " +
-                    "Try to add some records, or make sure that " +
+                description: _t("Try to add some records, or make sure that " +
                     "there is no active filter in the search bar."),
             }));
         } else {