Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  ba5a1b751648b7c0a512c786580aed643bcab5b0

Icon adjustments

- open.svg icon added for the "view in browser" feature form the share panel.
- expand.svg icon updated for better icon consistency (spacing also adjusted in the CSS)

Change-Id: Id6176d8f9b4884c9aabde05f1639500d3349f9a7