Change y-axis for user game history

![kicker_app](https://cloud.githubusercontent.com/assets/5399/2878600/2f5ddfd4-d45f-11e3-941a-8da9555f1a33.jpg)

![kicker_app](https://cloud.githubusercontent.com/assets/5399/2878620/68c16d9a-d45f-11e3-8825-a95d8a2c47d8.jpg)