Try radio buttons for "this service is completed"

I want to see if this works better than a checkbox in research today.

The hypothesis is that having two checkboxes maps more directly to the completed/not completed sections on the homepage.

![screen shot 2014-10-24 at 09 38 09](https://cloud.githubusercontent.com/assets/355079/4767028/60f71106-5b59-11e4-89fb-cc4fa90160bf.png)