LP#838525 DoB as date SQL upgrade repairs

LP#838525 DoB as date SQL upgrade repairs

1. Modify auditor.actor_usr_history DoB column in the same manner
   as actor.usr to ensure consistent date truncation.

2. let update_auditors() recreate auditor.actor_usr_lifecycle for us.

3. Wrap the whole shebang in a PLPGSQL "DO" block so we can easily test
for the presence of optional reporter views that depend on actor.usr, so
they can be recreated as needed.

Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Jason Stephenson <jstephenson@mvlc.org>