Update Wikidata, removes site link ui changes

We decided on an earlier branch point for wmf/1.25wmf12,
which does not have our site link ui changes since we think
they are not ready enough to deploy.  We keep changes here
that help performance.

see I032b3cec for changes vs. what is deployed on wikidata now

Change-Id: I1f57dba917d58b5af82094ba2551a27beb297f0f
Merge "Update Wikidata, removes site link ui changes" into wmf/1.25wmf12