Syncronize VisualEditor: fce0ed5..9a4d2ee

Change-Id: I19f2446bccb7cdea6cd7f8269efe3765a8285ac1
Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  561cdfb3e149a06cb1570cc37565512fc341dd57

Move shared stuff in jquery.wikibase to jquery.wikibase-shared

This allows us to just move jquery.wikibase to repo and then move
jquery.wikibase-shared to jquery.wikibase.

Change-Id: I988cc63494260d67c261287ce3f2e92f78ce7880