[IMP] [FIX] website_forum: cleaned and improved the management of available actions based on the user's karma. The karma levels are now stored on the forum itself, allowing customization. The various check of karma are done at model level and not at controller level anymore, leading to a more secure and easier to inherit behavior.
[FIX] tour.js: tour shop

wait that the snippets are loaded before clicking on the picture and open the media editor.
[IMP] addons: search view cleaning / improvements due to the new search view display
Merge pull request #771 from odoo-dev/master-forum-imp-tde

[IMP] forum: better management of karma-based actions, using calculated fields and view simplification
[IMP] website_blog: minor improvements in post form view (use group)
Merge pull request #675 from odoo-dev/master-search_view-crm-tde

[IMP] addons: search view cleaning / improvements due to the new search view display. Changes have been done in the main addons: crm, account, project, project_issue, hr_recruitment, purchase, sale.

Main changes :
- removed most of group_by in classic views (as most of them are usefull in a report view)
- removed all group_by in report views (as the new graph view allow to group on every field, no need to declare them)
- added some custom filters in various addons to help the user experience
- removed some useless icons / helps