Merge pull request #210 from franckstauffer/plugins

renamed i18n to I18n
Fixed icon in the websites accordion in Website menu.
Optimizations in <rbs-document-list/> directive.
Worked on dashboard... Still a prototype.
Added missing user image.
Added first version of Rbs_Tag plugin. Still needs work...
Added hideBreadcrumb() on Workspace.
Comments and TODOs.
Fixed Setup.
All tags are now sorted alphabetically.
Moved Rbs_Tag resources into Rbs_Tag plugin.
Moved Rbs_Tag resources into Rbs_Tag plugin.
Removed unused JavaScript files.
Admin plugin reorganization.
Fixed "userTag" switch disabled state when creating a new Tag.
Merge pull request #211 from fredericbonjour/Admin

Added Rbs_Tag plugin.
FIX OAuth Authorization parameters
[NEW] Preliminary implementation of PermissionsManager
Remove old permissions usage
Fix SQL transaction imbrication