Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  9e2d1bd121fe0f5c2525810702890ce7a7203107

Add user preference for non-beta disabling

Change-Id: I3f581975cfdf33bc15b8a4b23549c6401b4bfb87
(cherry picked from commit b0b1446f5b27021674a7ad6e97c03b9577093713)