Updated mediawiki/extensions
Project: mediawiki/extensions/Popups  e9a56a3b851005952a530ecc3c446835fbb7cecd

Some small cleanup

Bunch attr actions, add to DOM as the last action, rm superfluous lines
and use strict.

Change-Id: I3e0870b108e978d7fd4093a6e7201fb6260f2e88