Ui revamp

![new_chirp_details](https://cloud.githubusercontent.com/assets/2553665/4784832/604c47c4-5d68-11e4-86c5-1d0ec20be79b.png)
![new_main_activity](https://cloud.githubusercontent.com/assets/2553665/4784835/6050c498-5d68-11e4-8bd1-e038c74d15fe.png)
![old_chirp_details](https://cloud.githubusercontent.com/assets/2553665/4784833/604f4f46-5d68-11e4-9c5f-fcc1e4e4d529.png)
![old_main_activity](https://cloud.githubusercontent.com/assets/2553665/4784834/604fe7f8-5d68-11e4-96dd-fb6a4bb2a480.png)