FUTURE: Seventh batch of pilot sites for Media Viewer

Merge and deploy 2014-05-15, barring any problems.

* Wikimedia Commons

https://www.mediawiki.org/wiki/Multimedia/Media_Viewer/Release_Plan#Large_Wikis

Change-Id: I5da4aa5db7b5d3c1843a6fd68d0a7c62a2bbfb4e