Merge pull request #1039 from loiccouturier/master

Enhance order process to load shipping mode
Add Address filter on Rbs_Geo_Zone document
Merge pull request #1040 from inthause/documents

Add Address filter on Rbs_Geo_Zone document
Update address edition in order process.
Add CreditNote backoffice editor
Add hasCreditNote cart filter
Merge pull request #1041 from inthause/documents

Add CreditNote backoffice editor
Add discount sample
Some fixes on backoffice editors
Merge pull request #1042 from inthause/documents

Add discount sample
Fix a php notice
Add notification for user and order confirmation
Fix cache files right