- Upgraded to Play 2.1.3
- Added a enableRefererAsOriginalUrl property to enable/disable the use of the referer as the originalUrl
  since this was causing issues for some people (defaults to false).  This is a temporary until a final
  solution is developed.
- Renamed class name UserId to IdentityId (breaks backwards compatibility)
- Renamed id field in UserId to userId (breaks backwards compatibility)
- Renamed id field in Identity to identityId (breaks backwards compatibility)
Merges with Master
Review fixes