Bug-51: UI refresh

Do the following:
1. Change project theme.
2. Change buttons style.
3. Use font to display icon.
4. Other UI Adjustment.
Screenshot of my tablet:
![tablet](https://cloud.githubusercontent.com/assets/6179015/3966514/e6888fa0-27a3-11e4-96ab-f85c2a9f0308.png)
![tablet2](https://cloud.githubusercontent.com/assets/6179015/3966520/ff1c7b58-27a3-11e4-8cf4-e12625ffdcdb.png)