Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  c7dc994b7c2370956d66b6cec1f9e7fe9510aea9

Cleanup GetEntities ItemByTitleHelper and others

 - Factors out a big methods
 - Removes bad things from ItemByTitleHelper

Again Api output remains the same!

Change-Id: I7314f865075ebd9d2957892078b3267fa0ab3ddf