Removed functionality for new user registration.
Moved http_proxy references from the geocoder initializer into the environments variables for development and test.
Added gem to give country lists to use in populating new processing units.  Added in fields to input city / state / country data, and initial code to start parsing out location granularity.
Got the location granularity programmed into the processing units controller pretty well, still leaves legacy coordinate data on occasion, something to get to later on.
Style changes for 'updated at' date fields.