Revert merge from inverse

https://github.com/Zentyal/sogo/pull/150

Because the login on web with the use of outlook is broken after
including the DomainLessLogin feature

NEWS

@@ -1,23 +1,3 @@
-2.3.1 (2015-06-XX)
-------------------
-
-Enhancements
- - improved EAS speed, especially when fetching big attachments
- - now always enforce the organizer's default identity in appointments
- - improved the handling of default calendar categories/colors (#3200) 
- - added support for DeletesAsMoves over EAS
-
-Bug fixes
- - EAS's GetItemEstimate/ItemOperations now support fetching mails and empty folders
- - fixed some rare cornercases in multidomain configurations
- - properly escape folder after creation using EAS (#3237)
- - fixed potential organizer highjacking when using EAS (#3131)
- - properly support big characters in EAS and fix encoding QP EAS error for Outlook (#3082)
- - properly encode id of DOM elements in Address Book module (#3239, #3245)
- - fixed multi-domain support for sogo-tool backup/restore (#2600)
- - fixed data ordering in events list of Calendar module (#3261)
- - fixed data ordering in tasks list of Calendar module (#3267)
-
 2.3.0 (2015-06-01)
 -------------------