[FIX] Handle menu deactivation.
Remove obsolete attributes from some models.
Fix document picker single display with specific item template.
[FIX] Document and documentArray attributes display in front office.
Clean brand editor.
Fix rounding methods in price editor.
Misc template and style fixes.
Merge pull request #675 from intportg/dev

Fixes and cleanings.
Merge pull request #676 from inthause/documents

Refactor VariantGroup document
Fix avatar manager
Fix fatal error in workflow
Enhance NotificationCenter. Fix #507
Merge pull request #677 from loiccouturier/master

Fix avatar manager. Fix fatal error in workflow. Enhance NotificationCenter. Fix #507
Spellchecking
US Localization
Fixed JavaScript object creation for Main menu.
Fixed strange behaviour with z-indexes and 3D transformations in Main menu.
Removed Twitter Bootstrap's "panel" component for <rbs-document-list/>.
Changed main background color to white.
Refactoring of Asides management. Still have to rewrite some templates for all plugins...