Better Yelp links

This adds find_loc to the query string to ensure that when someone clicks on a Yelp link in Hack Spots, it populates the Nearby field with the city & state. For example, http://www.yelp.com/search?find_desc=Backspace,Portland,OR doesn't work, but http://www.yelp.com/search?find_desc=Backspace&find_loc=Portland,OR does.