UI tweak

Few things done here.

* Move Debugger to tools and can open manually when you need it 
* Make game list occupied whole top area .
* Make log viewer occipied whole bottom area

![untitled](https://cloud.githubusercontent.com/assets/3000282/3207596/3e0e6c16-edef-11e3-8e91-bc9ca8fcbb2e.jpg)