Fix dealer registration

Applies a new round of fixes to finalize dealer registration for AC.
Haha, damn right!

But seriously, I considered pulling the date from DEALER_REG_PUBLIC. Unfortunately, dates are currently parsed as "end of day" and we want "beginning of day." Because of that, we may end up needing to, say, set DEALER_REG_PUBLIC to December 14th but tell people that it opens on the 15th.

We tried to use a a 00 timestamp to force dates to start at the beginning of the day, but uber just exploded, because it's parsing them as dates and not as datetimes as far as I can tell.