Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  a86a6d5b9e29147bb5cdb078c087ae50c9bb7249

Fix resize engine for fullscreen

This sorta has a few other miscellaneous fixes in it, but it works!

There are maybe still funky behaviours left. Test it?

Also refactor some bits, so we aren't accessing mw.mediaViewer in the
interface code.

Change-Id: I69db8e7b4ff5f994ba706fd4965688f3c26859f4