Add additional details to provider list. Feature #3641

Added the ability for the provider model object to have "addressOne" and "unit" properties. I also altered the display of the providers during screening to reflect these changes. (see attached)

![Screen Shot 2013-03-28 at 10 30 41 AM](https://f.cloud.github.com/assets/109652/313998/e1e22d56-97be-11e2-8a1e-08747214a9fa.png)