Allows the user to automatically configure Field app based on chose location. Feature #2613

This will allow the user to pick the appropriate end point for Cases based on which location they chose using a menu. 
![Screen Shot 2013-03-20 at 9 36 45 AM](https://f.cloud.github.com/assets/109652/280983/9c929aa0-916b-11e2-96e8-97ac2e7e7407.png)