Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  6ca5c23ae1af32ca488dddb45756878253d4df9f
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Using textarea in wikibaseItem widget

- patch set 2: Updated Selenium tests
- patch set 3: Removed obsolete Selenium element definition

Change-Id: I941a99e8c5803f723fdeb560f08af443d6cecb80