Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  73e081c197cb4cf9915c5d8d0e5b2c21c529c59a

Reuse static toolbar button DOM nodes

Instead of generating new HTML nodes, existing button nodes are detected and the button widgets
are initialized on top of these nodes.

Change-Id: Iecafe159f4f9dbd60f658222745e10ffaa231f36