Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  ffc8f4948d1329eff3deea57f4240850835416ce

Add smoke test to class mw.LightboxInterface.
  - Moved tests that were meant for LightboxInterface objects.
  - Fixed space naming issues.

Change-Id: Ib83904eab5fa542330ea559d420efa5f1de8c3eb