unique constraing on oauth identifier fields
unique constraing on oauth identifier fields

nicktimko/Planet-Lab,andymcguinness/Planet-Lab,andymcguinness/Planet-Lab,andymcguinness/Planet-Lab,freedomgames/Planet-Lab,freedomgames/Planet-Lab,freedomgames/Planet-Lab,nicktimko/Planet-Lab,nicktimko/Planet-Lab,nicktimko/Planet-Lab