Make the authentication decorator take multiple arguments
Merge remote-tracking branch 'origin/refactor-db' into refactor-db

* origin/refactor-db:
  filename preserved in download
Fix bug in admin handlers
Merge remote-tracking branch 'origin/refactor-db' into refactor-db

* origin/refactor-db:
  transactors trashed
  cleaned unsupported API + decorated Admin API
  added internaltip_id Reference in ReceiverFile and completed some minor things