Load ext.wikiLove.local via module dependencies

Currently the 'ext.wikiLove.init' module is wrapped in a
mw.loader.using( 'ext.wikiLove.local' ) call, which means that
the "ext.wikiLove.local" module is loaded in a separate request.
Since we know it has to be loaded anyways, requiring it from the
PHP side is more efficient.

Change-Id: I4ac5d190d83478945645d99af4aab68f640f0130
Merge "Load ext.wikiLove.local via module dependencies"