Merge pull request #389 from fredericbonjour/Admin

Fixed Richtext block rendering.
Fix special char in filename
Merge branch 'master' of github.com:RBSChange/Change
Merge pull request #390 from loiccouturier/master

Fix special char in filename for LocalStorage
[FIX] Fix Collection editor
[NEW] Add Rbs_Stock_Sku thresholds property
Merge pull request #391 from fredericbonjour/Admin

Fixed Richtext block rendering for links.
Merge pull request #392 from inthause/documents

Add Rbs_Stock_Sku thresholds property
[NEW] Mail template
[FIX] issues with localized document
[NEW] Module Notification
[UPDATE] Unread notification count on Dashboard
[UPDATE] improve time-interval-input directive
[UPDATE] remove missing todo
Merge pull request #393 from renaudJennyRBS/mail

Notification module
Added basic (well... really basic!) UI for external links.
Enhanced Markdown preview.
Fixed loading indicator problem.
Added tip for Markdown editor.
Fixed layout when alternate text is empty.