WARNING: HUGE COMMIT

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.

1 files changed, 5 insertions, 4 deletions

diff --git a/languages/messages/MessagesKk.php b/languages/messages/MessagesKk.php
index 1092945d9542..3586d3330a73 100644
--- a/languages/messages/MessagesKk.php
+++ b/languages/messages/MessagesKk.php
@@ -1,9 +1,10 @@
 <?php
 /**
-  * Kazakh (Қазақша)
-  *
-  * @addtogroup Language
-  */
+ * Kazakh (Қазақша)
+ *
+ * @ingroup Language
+ * @file
+ */
 
 # Stub message file for converter code "kk"