The start of adding additional fields to the administrators menu of
options.  Added

1. Username for the Service
2. User Password for the Service

TODO:

1. Add service toggling drop down.
Add all the fields to the Admin interface required to user either a
WebService or a Local Database.  Also grouped the configuration options.
Currently still saving all information submitted on the page.
Added the selection drop down, so administrators can manually toggle between services
Removed the password option because the password is not need to authenicate to the webservice
Requested Text changes including case changes, and selected_service to data_source
Merge pull request #3 from thinkthroughmath/cc/AdminAdditionalFields

Cc/admin additional fields