[fix bug 1033306] Allow Mozillians to update their legacy vouch by re-vouching.
Merge pull request #1014 from akatsoulas/1033306

 [fix bug 1033306] Allow Mozillians to update their legacy vouch by re-vouching.
[fix bug 1034025] Add Vouch.autovouch boolean field.

* Revert the migration that adds Dino McVouch user. See
  https://bugzilla.mozilla.org/show_bug.cgi?id=997407#c1
Merge branch 'dino' into vouchrefactor
[fix bug 1033993] Implement new vouching process in /invite page.
UI fix.