Board Thread:Support Requests - Getting Technical/@comment-5693502-20150712150504/@comment-26847884-20150712151153

Here are a couple of them:
 * https://www.mediawiki.org/wiki/Extension:Nuke (allows mass deletion of pages)
 * https://www.mediawiki.org/w/index.php?title=Extension:Oversight&oldid=521106 (allows hiding contributions)