Adding a new user or group now displays a success message. Both types of messages are dismissable (close button).
Adding a new user or group now displays a success message. Both
types of messages are dismissable (close button).

Still missing:
  Adding user to user to {group,role} and viceversa.
  Such messages for new collections.
  Deleting {groups,roles,users} messages.

mdunker/usergrid,mdunker/usergrid,mdunker/usergrid,mdunker/usergrid,mdunker/usergrid,mdunker/usergrid,mdunker/usergrid,mdunker/usergrid