[DEV-1449] Remove slug from arguments of user url views.
[DEV-1449] Remove slugs from urls in urlconf.
[DEV-1449] Remove slugified username from url calls in templates.
[DEV-1449] Remove slug from user's get_profile_url method.
[DEV-1449] Add first name and last name to test-generated Users to get tests passing again.
[DEV-1449] Remove slugified username from test code.
[DEV-1449] Clean up additional uses of slugified username.
[DEV-1449] Merge branch 'DEV-1411' into DEV-1449: index tuple returned by get_or_create.
[askrover] Merge branch 'DEV-1449' into askrover