Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  e2966b4079c454b09eb199d7b269e4cb64334709

Point the navigation E2E test to the right image

Since we shuffled content around on Lightbox_demo,
the test was trying to read the wrong image.

Change-Id: I4ccaa0a1ab354aa4c19bc3870fb54b0ea11ff086