Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  c0c9e7037f75427b5f093361bdc8e63bf996aa23

ResourceLoader consistency file moves

Keep modules in separate dirs, move images to their module dirs, and fix
up the module declarations so they still work.

Also moved viewer.svg into the root.

Bug: 56421
Change-Id: Ia84ddfd3b91c784c42d9ba243c5cfd46354f139f