Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  516d0168c3d27a9865122513fff677721ba00453

File usage dialog: Only reselect on focus, not on every click

Makes it possible to view the entire content of the box without copying
the text somewhere else, or to only copy a part of the text.

Change-Id: I8ed8beaadf7e515e57ee4f11bdaef9672c980f5b