advanced functionality for search results ordered by location

Advanced search framework is built.
ActiveRecord queries need to be added. 
Someone is going to want to see if we can do this is JS better. In fact, we should probably pair on it this afternoon. 

Next I'm going to make it hit the Google Geocoding API to get the coordinates for user input. 
After that is searching the sets of coords for auctions taking place within 2 mi, 5 mi, etc.