[IMP] crm: kanban customization
- stage model: add field holding the eventual specific legends for kanban
tates and star (priority) management
- crm.lead kanban: use kanban column using group_by_tooltip
- update data and demo data
[IMP] hr_recruitment: applicant kanban customization
- stage model: add field holding the eventual star (priority) management
+ updated applicant kanban view
[FIX] website_forum: fixes
    [FIX] website_forum: escape the tags from post at texttext rendering
    [FIX] website_forum: jquery is not already loaded
    [FIX] website_forum: use uid from session because WebsiteForum object has no attribute '_uid'
[FIX] fix bouncing issue in form view (web client)

the buttons edit and create have been ungrouped recently.  As a
side effect (of course), the bouncing effect in form view is broken.
This should hopefully fix the issue without introducing any other
problems :/
[FIX] crm: fixed bug in m2m between sales teams and stages introduced
when cleaning the models. The m2m table name is different when defined
in sales_team or in stages, leading to a quie strange behavior.
[IMP] website_twitter: authentication error popup with proper description base on twitter error code and responses