Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  a21b94abdcd5b78491b6a7367e0b8202814b1a7e

Consistency tweaks in preparation for adding extension to translatewiki.net

* Fix description message key
* Initialize messages array for healthy of translatewiki.net scripts
* Remove . from end of description message

Change-Id: Ib51e0f6dd58662a5653949d3c5fe402012425267