Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  5052a345b7dc12822daab39e5598005b62138dea

Reverse the colour scheme for MediaWiki's purposes

multilightbox uses white-on-black by default because that's how most
sites roll. We want black-on-white, so I've reversed it now.

Change-Id: I0d7eb36eda5bfdcb5d019cc31a7358bf71e33df0