Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  f5a6d67749cab69b72c20cb90bf8a6b3b1528ff6

Fix IE9 history navigation

Change-Id: I83469fdaa069e80dc17c0c0c307bff7e9b25e468
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/617