Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  244b056249cb6f552238ea18d26d3a4f343c740f

Initial setup for Multimedia Viewer browser tests and first basic e2e test.

Did some clean-up for Cucumber tags and code conventions.

Change-Id: Ifc954f60a50c41211043493fd64c2dcfa64848ff
Mingle: Multimedia card #100
Bug: 60049