[ENHANCE] Two separated forms to add document items and URL ones in menus.
[FIX] Hide Rbs_Seo_HeadMetas block from BO menu.
[FIX] Add missing locale for XHTML Template block.
[FIX] In menu item creation, allow all publishable and non-abstract models.
[FIX] Markup of Model selector in document picker and homogenization of single and multiple pickers
[FIX] Cross-browser quick actions menu display
[NEW] Add "functions" item in websites' quick actions menu.
[FIX] Freeze action.
[NEW] Add theme name before page template name in lists.
[FIX] Misc minor fixes.
Merge pull request #583 from intportg/dev

Misc fixes and refactoring