Jump to game on challenge

[sethwhitaker]

Feedback: User test noted that they expected the challenge button to jump right into game when clicked rather than popping up a play button.

Pros:

• Gets user right into game.
• Keeps them from accidentally starting multiple games.

Cons:

• Takes them away from the dashboard when challenge action isnt clear.

[sethwhitaker]

Closing in Favor of #81 Feature