Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  d246d7709aed26bf6404da0c66c4aec304331384

Simple test for enter/exiting fullscreen mode

While writing the test I spotted a bug and fixed it

Change-Id: I781c67752781960e4be88520f53163756fc11dab
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/140