Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  e29818a8255e428b0a60a5eacbafeedd71855226
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(bug 41994) display labels and descriptions in user languages

This gets the user languages as specified in Babel and then
displays them on the entity page. Will be extended to allow
direct editing and also to select the languages a bit smarter.
Currently set as experimental.

Change-Id: Ie91ca208d32e6a6679b95cc9c2e112ec207c26a0