Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  73da6512b9c77273236df76b59066c626000f1f5

Remove underscore from class names LBFactory_*

Depends on merging of MediaWiki core patch
https://gerrit.wikimedia.org/r/#/c/96469/

Change-Id: If442db60ca105dea1216f307b7f8f75fc0bf677f