Purpose
=======
Some users found a way to farm karma points, so we want to be able to
track the source of the karma gain / loss.
Specifications
==============
Now, we added a reference field `origin_ref` which store the record
responsible for the karma gain / loss (e.g. a slide we just completed).
In addition to this origin, we also have a new field to store the
reason (e.g. "Slide completed") so we know exactly what happened and
how the user gains his karma.
Before, the `old_value` of the karma tracking has to be set manually,
but now it's done automatically based on the value of the previous
tracking of the same user. That way, it will simplify other part of
the code.
Add the karma reason in the website modules. Adapt those modules due
to the changes in gamification.
Task-2234179
closesodoo/odoo#76430
Related: odoo/enterprise#23702
Related: odoo/upgrade#3299
Signed-off-by: Warnon Aurélien (awa) <awa@odoo.com>
Co-authored-by: std-odoo <std@odoo.com>
