Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  ceab2e21f63af6f7bf9303973a34ee38a0ef3c39

Move a bunch of Lib Diff stuff to repo

This isnt used anywhere in client and doesnt depend
on anything so lets put it in repo!

Change-Id: I9029865b016851fad3653a66bf93f154ef27e5d6