Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  84a133b1590978dfa240d5ac9d25ebf211449629

Fix an error in the lua api when the entity has no label or sitelink

If an entity has no label the entry "labels" doesn't exists in the table
and made the script fail. Idem for sitelinks.

Change-Id: I220996203ac88890ea8a2c50193e0932a907ddcd