Change UI & add Game tab

Hi FlappyCoin core devs, 

I just re-designed our wallet, check the below screenshot. 
![screen shot 2014-03-08 at 12 14 42 am](https://f.cloud.github.com/assets/344684/2360611/7f5674d6-a626-11e3-80cc-58e33f0ccc92.png)

Cheers,