Add new PublicationStatus document property constraint

Implement fromList attribute on Enum constraint
Merge pull request #254 from inthause/documents

Add new publicationStatus document property constraint
Refactor event registration.
Merge pull request #255 from inthause/documents

Refactor event registration.
Merge pull request #256 from fredericbonjour/Admin

Updated Backoffice with many enhancements and additions.
[FIX] incorrect init of timeZone
Merge pull request #259 from franckstauffer/fix

[FIX] incorrect init of timeZone
FIX Rbs\Geo namespace
Add HasPermission predicate.
Merge pull request #260 from inthause/documents

Add HasPermission Db query predicate.
New price module
Incomplete test
Merge pull request #261 from franckstauffer/dev

New price module
Website Documents are inserted in the tree when they are created.
In Rbs_Media_Image, "label" value is set to the file name when not defined.
Enhanced layout to remove useless space at the bottom.
Menu can be closed with Escape key.
FunctionalPage Editor localization.
Removed default actions in the list in the default picker template.
Added possibility to configure the functions of a section.