Implement one game flow: part 1

- Remove unused utility functions
- Implement the flow of switching judges

## Test in browser
Given there multiple browser (localhost:3000) open
When you are the first player
Then you are the first judge
And on round you should see instruction that says "you are JUDGE"
![round10](https://cloud.githubusercontent.com/assets/806135/3682649/b35ff716-12d2-11e4-9151-15175137ceb9.png)
When a click white card transpires
Then it switches judges to another player
And you should not see instruction that says "you are JUDGE"
![round9](https://cloud.githubusercontent.com/assets/806135/3682653/d6dd27d6-12d2-11e4-968e-9837beb70223.png)