This is a global search and replace of NS_IMAGE and NS_IMAGE_TALK with NS_FILE and NS_FILE_TALK respectively in all core files, excluding those already updated in step 1 (r44004).
Doxygen documentation update:
* Changed alls @addtogroup to @ingroup. @addtogroup adds the comment to the group description, but doesn't add the file, class, function, ... to the group like @ingroup does. See for example http://svn.wikimedia.org/doc/group__SpecialPage.html where it's impossible to see related files, classes, ... that should belong to that group.
* Added @file to file description, it seems that it should be explicitely decalred for file descriptions, otherwise doxygen will think that the comment document the first class, variabled, function, ... that is in that file.
* Removed some empty comments
* Removed some ?>
Added following groups:
* ExternalStorage
* JobQueue
* MaintenanceLanguage
One more thing: there are still a lot of warnings when generating the doc.
* Using getUserPermissionsErrors() rather than userCan() in Title::isValidMoveOperation()
* Removing blocked check from Article::doRollback(): Title::getUserPermissionsErrors() checks for that already
API:
* Refactoring ApiMove to use new messages system
* Adding more messages to ApiBase::$messageMap
* Removing unused parameter to 'notanarticle' in ApiDelete::execute()
* Refactored ApiDelete to use the new dieUsageMsg() system
* Adding some more messages to ApiBase::$messageMap
* Also using dieUsageMsg() for API-related errors in ApiRollback
* Removing 'lo' prefix for ApiLogout as it doesn't have any parameters anyway
