Make vehicle status more readable

Fixes #81. Adds `*Readable` status fields to `Vehicle` and mushes them together to display in the vehicle popup.

![readable vehicle status popup](http://cl.ly/image/1Z1n3s3t3D1j/Image%202014-10-21%20at%2011.40.00%20AM.png)

jep-8: dont need 2 spaces before `===`