Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  567039c14ed58d9a3eae1c88017007fe2858f647

Fix bug that would cause the image to stay small

When opening the lightbox, the image might stay small
because of a race condition. This is fixed using a
deferred object.

Change-Id: I4e93c7d26da47e5177abeb1dac841bf6c25a9022
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/138