Prefix and group fixes

[HadleyKing]

• [x] Test BCO Tools tab on builder page
  1. Select BCODB
  2. Retrieve available prefixes
  3. set prefix
  4. On Save as DRAFT page redirects to BCO page
     • [x] Upload and Download of BCOs on builder page
     • [x] validate BCO
     • [x] Prefix search works as expected
     • [x] Register New prefix works
  5. creates 2 groups: _drafter an _publisher
     • [x] Group modification works