Purpose
=======

User tests have been made by the Product Owners team. It showed that the planners are not used by new users on Odoo due to several reasons (They are too static, too heavy to use,...)

Specification
=============

Remove the module and its different applications. The onboarding on the business flow will be improvement in the weeks to come.

remove double cross

close #19731

* web_editor, web_planner, website

The 'Dialog' class is used in both backend and frontend. Also, lots of
actions can be done without the use of any modal. It thus makes sense
to lazy load its related xml only when a first modal is opened.

This change also allows to get rid of the "base_common.xml" file as the
dialog template is the only remaining one in there and, in the future
website update, it will allow to not load any static XML file on website
page loadings.

Although a dark 'border-bottom' is necessary in some occasions (to add
contrast between the page's content and the navbar itself), the other
borders were totally unnecessary.

Moreover, having a complete border causes complications to calculate the
sidebar height and to manage buttons' size and line-height.

This fix will keep the border-bottom only, removing the other ones.
Compensation rules ("- 2px") are no longer necessary.

The RPC system was not completely satisfactory, we decided to prepare
the future and do it properly.  This commit introduces the new rpc
system, which replace the previous new one.  We now simply have a
method, this._rpc, which takes a dictionary of parameters.  The idea is
that depending on the parameters, it is able to add correct default
value when necessary.

For situations where we don't have the this._rpc method, we can use the
rpc.query method, which takes the same arguments, but directly calls
ajax.rpc instead of triggering up some events.

The _rpc method is now the preferred method to do a rpc, so we need to
update all calls.

The this.performModelRPc method is deprecated, so with this commit, we
remove some calls.

Use this.rpc instead of Model object, with web.ajax if necessary.

nb: EventDispatcherMixin include now the custom_events managment instead
of widget

This commit introduce a full redesign of all JS views.  We started
basically from scratch.  The goal was to unify all the various views
under a common framework, to make them testable, to make then usable in
different conditions (in studio, or in the frontend), and to make our
lives easier.

Some important points are:
- we introduced new coding guidelines (camelCase, 80 chars width, ...)
- we have a brand new testing framework (still QUnit based)
- kanban view moved to the web addon
- calendar view (formerly web_calender) moved to web as well
- the tree view was removed
- all new code should be documented

We hope that this code is the start of a new era for the Odoo web
client, we want to have a high quality codebase, well documented, well
tested, well designed.

Work done by the framework team: mostly aab, ged, chm, dmo, qsm