Get confirmation when trying to insert/edit template/citation with required parameters missing

Relies on I5d894f8a in MW core. We'll need to update our wfUseMW when that gets merged.

Bug: 50747
Change-Id: I35e55658a3990121afe4d996ef4ee06547d2aa0c
Merge "Get confirmation when trying to insert/edit template/citation with required parameters missing"