Locations for everyone

This exposes locations as a separate thing from CommTrack. Actual locations are still really only useful if you have CommTrack turned on, but this is step one of getting Sheels monster feature out.
It shouldn't, though I agree it is confusing. `commtrack_enabled` was defined a few lines up based on the domain's type (which comes from the url the user is creating from). If it's http://www.commcarehq.org/register/domain/commtrack` we want to turn commtrack and locations on.