Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  ea3eb5324c34f81418b9836733c18c92b8f70b4d

Improve test coverage for WikibaseClient factory

also changes the order of the tests to be consistent
with order of methods in WikibaseClient factory.

Change-Id: I17a9377c460e11d13ab8a1a45fa18c70ed0fa2e6