Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  f2050859daa8ed388472923b7bf2d07c3e7cc573

(bug 38201) Refactor Sites related wikibase tests in frontend

* Control configuration data rather than assuming some.
* Also test certain sites to be set instead of just checking for unknown sites.

Change-Id: Ia727a722e4afd53c196433daa76784d1f6134ff1