Added form field for managing editors of an event
Apply chosen editors in event form to event model
Require session authentication to retrieve suggest users and their email addresses
Removed BasicAuthentication
Use a single query to find the set of suggested users
api retrieval of suggested users now requires current user to be superuser or in Contributors group
Merge pull request #108 from ox-it/manage_editors_interface

Manage editors interface
Merge branch 'master' into update-synchronously-search-index

* master:
  api retrieval of suggested users now requires current user to be superuser or in Contributors group
  Removed BasicAuthentication Use a single query to find the set of suggested users
  Require session authentication to retrieve suggest users and their email addresses
  Apply chosen editors in event form to event model
  Added form field for managing editors of an event