Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  b7bdb7ca12a38cbc47eba87b03e6693a84de4dee

(bug 62643) Split up ChangeOpFactory

This splits ChangeOpFactory into several factories,
each providing ChangeOps for one aspect of entities,
such as terms, claims, sitelinks, etc.

This also introduces ChangeOpFactoryProvider, which
provides ChangeOpFactories based on the type of the
target entity. This allows for validation to be
specific to a given type of entity.

Change-Id: Ifc00c97ecc41ebc9219f5e0e5558c7a777a88e89