Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  24ba37d57bdd66cc3033f6793098f1d48a28ed85

Add client-side flag for disabling the viewer

Also set it on server-side. Use mw.config to override.

Change-Id: I00ea1ee8544d2c802f09fd25f7abaf29752f3641