Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  b282e047a95528170c7f7f4dda6b6db297fdc3e7

Fix group Database tests which derived from PHPUnit_Framework_TestCase

@group Database only works with MediaWikiTestCase as parent.
Removed @group Database from WikibaseClientTest as that doesn't
use the Database as far as I can tell.

Change-Id: I0c485aa7e7ec1259a6210d6a0bf94de904e6a112