Added rabbit
Removed old rabbit
Removing exception handling

Rabbit does this for you.
Fixed "major" syntax error.
Valid credentials to signin with Rabbit
Error handling for Rabbit just in case

There is a possibility that an unknown PlayerIOException will be thrown,
in which case Skylight should handle it.
Removing login method

Going to make a method stub for backwards compatibility, maybe.
Otherwise Rabbit knows which authentication system that it needs.
Error message if using depricated calls
Removing unused directives
Using Rabbit for authentication