Updated mediawiki/extensions
Project: mediawiki/extensions/OAuth  f3eac81036af4b6bb18a32cd7932c9205c3b7301

Cleaned up special pages and directories

* Special:OAuth => Special:MWOAuth for consistency
* All special pages are now directly under /specials
* Prefixed the other special page classes with "Special"

Change-Id: I6adb5e0efbe90d6d81753005b97e6c892cb4f9c4