Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  cf486877316ae9b963d983ec93b656a1d089d4e3

Migrate jQuery andSelf() to addBack()

Deprecated in jQuery 1.8
http://api.jquery.com/andSelf/

Change-Id: I4988c24c4f14c2962f12065acccc7dd51899a2e4
Task: T67399