Implement workflow for the game ending and returning to CSS

[WhiteTPoison]

Right now, the game crashes once the game is over as there isn't any logic as to what to do once the game is over. What we want to happen once somebody wins:

1. Report winner to Lylat with stock count and such as is required by the Lylat API.
2. Return to CSS with information filled out as to who you're playing and such.
3. When you change characters, update your opponent's screen with the new character.
4. When you're ready, show it on the UI and go to training room.