Updated mediawiki/extensions/Wikidata
Project: mediawiki/extensions/Wikibase  67d75c7b7ed629321bddceb01b8eb7ca1693a8b6

Factor hard constraints out of EntityContent

This removes some nasty dependencies on global state
from EntityContent.

Change-Id: I439ca5d678bcf80d634b9d9401f7aca9618ae365