Kanban view Modes & US estimation fron lightbox

![image](https://cloud.githubusercontent.com/assets/877218/4303401/de99204c-3e65-11e4-8be5-bb245dd471ba.png)

![image](https://cloud.githubusercontent.com/assets/877218/4303416/065a665e-3e66-11e4-8791-19a868ffe804.png)