New main menu and better scoring UI

I got around to making the main menu more stylized and made the main menu orbit around a field (which now that I realize it looks a lot like Mosim).
I also fixed a few bugs with the multiplayer experience with bugs such as people not being able to score and the UI not resetting.
Up next I want to make a menu to let you choose a robot to use in the matches (instead of directly spawning the robot in)