Set MV true by default so flag isn't needed.

* MV is set true by default--this doesn't actually remove the flag code, just
  ensures that in all cases the MV path is selected. This is to make cleaning
  the mv code cleaner and allow submitting cleanup possible as it's finished,
  rather than in one big block.
* As drive by, MV conditional elements in the index.html file have been removed.
Is there a reason to comment it out vs just setting it? Now it's in two spots to update post-landing.