Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  3dc1b7d0e45df38c7537e52d9c15bb7a3f80ab26

Big credits patch

Add all authors, and put the extension in the new "Beta features" credit
section in Special:Version.

Change-Id: I22b0ab0ded87191832b469bec21665ef3fd6f2e1