Updated mediawiki/extensions/Wikidata
Project: mediawiki/extensions/Wikibase  f34d43016612d540a5177b2d4d9b5ac72eb99dd6

Introducing ApiHelperFactory.

This is in preparation of refactoring API modules to use composition
of helper objects instead of sublcassing ApiWikibase.

Change-Id: Ib27494b83e8f1e4dba6bec44efe085f773b88ca9