Feature/arc context

This adds a disabled state to the landing apps. It also moves the data from a JSON file to a loopback model.

![screen shot 2014-11-20 at 5 04 59 pm](https://cloud.githubusercontent.com/assets/462228/5136118/6e0f2a16-70d7-11e4-8096-928d0f6ba84b.png)

/to @anthonyettinger @seanbrookes