Purpose
=======
This commit is enhancing the website_slides module.
Specifications
==============
It changes placeholders for certain fields, it changes helpers in some
of the views.
It updates some of the main views of the menus and corrects wordings
inside of them.
It activates the Graph and Pivot views for the reporting of
Courses, Reviews and Quizzes.
It cleans up some of the measures inside of the Pivot and Graph views
of each menus where it is available.
It also merges 2 models: slide.slide.link and slide.slide.resource into
slide.slide.resource with a type Selection field.
This is done in order to create a single table for the additional
resources of a Content.
It also improves the front-end of the module with minor changes.
It fixes the problem of long names inside of breadcrumbs.
It also adds a message when there is no leaderboard in /profile/users.
task-2597345
See odoo/enterprise#20480
See odoo/upgrade#2784
Part-of: odoo/odoo#75646
Task #1945036
Purpose
=======
If the user fails his last attempt at a course certification, we remove him from
the members of the course (and he has to enroll again).
He receives an email in the process notifying him of his failure and suggesting
he enrolls to the course again.
The purpose is to have a 'certification flow' where the user can re-purchase the
certification when they have failed it.
This could lead to some issues if the course containing the certification also has
other slides with content because the user will not have access to them after failing.
This also prevents configuring courses with multiple certifications since the membership
will be removed at the first failure.
These use cases are considered "non standard" by the business and are thus not handled
in the code. We assume that users will configure their courses "correctly".
Thomas Josse