Refer to the online docs instead of duplicating the content.
Added changes needed for chat.
Synchronized German translation file.
Updated German translation.
Fixed module translation.
Update transifex config. Synchronized translations and updated to Transifex.
Fixes for translation management script.
Switched dynamic field test files to the object manager.
Switched email test files to the object manager.
Added silent parameter to prevent unwanted error log.
Removed duplicate vars statement.
Re-activated missing options for ACL GUI PosibleADD section.
Added missing trash icon.
Added missing used modules.
Added missing trash icon.
Exchanged tree selection icon by more speaking sitemap icon.
Merge remote-tracking branch 'upstream/master' into otrs-master