Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  c0a6987e9515d66195f31402ee8db656e28ce628

Push history state to support links to media viewer

Also listen for popState events so users can use their browser's back
functionality to close the lightbox or go backwards, etc.

Bug: 56469
Change-Id: Id44fea9008adb391817250c2897693f45bead717