[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.
[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
[IMP] tour.js: raise an error when phantomjs run a tour and an other running tour has been detected.
Merge pull request #853 from odoo-dev/master-tour-kill-log-chm

[IMP] tour.js: raise an error when phantomjs run a tour and an other running tour has been detected.