Use katana forms auth module instead of custom one.
Added support for windows auth again.
Changed the cookie name to jabbr.id
Made some changes to auth.
- Changed AddUser to GetOrAddUser on IMembershipService.
- Implemented an IFederationAuthenticationProvider for jabbr's wsfed auth.
Normalize claims based login.
- Removed logic that converts social sign in to user and made
  it sign in with claims instead.
- Removed Membership logic from the JabbRFederationAuthenticationProvider.
Resolve the IFormsAuthenticationProvider