Fix possible exception when retrieving reminder

Fixes #2678
Fix JavaScript exception in Contacts module

Fixed calling unescapeHTML on null variables. Also fixed errors on IE7
(and possibly other versions).
Fix detection of IMAP flags support in JavaScript

Fixes #2664
Fixed the ActiveSync issue marking mails as read when downloading them
Fix for bug #2681
Fix for bug #2691
Fixed the AS bundle common makefile
Remove executable permission from jQuery
Fix email validation regexp to allow gTLDs

New generic TLDs can be as long as 13 characters.
Merge pull request #31 from opensaucesystems/patch-1

Fix email validation regexp to allow gTLDs
Merge pull request #30 from dekkers/remove-executable-permission-from-jquery

 Remove executable permission from jQuery modules
Update NEWS file
Simplify [UIxContactEditor addressBookDisplayName]

We were trying to translate the default address book name to the user's
language, but the method [SOGoContactFolders defaultFolderName] is
already returning a translated string, making the whole logic useless.
Fix for #2686
Update translations
Update CKEditor to version 4.3.4
Update ChangeLog
Preparation for release 2.2.3
Merge to 2.2.3