Method and route for full text pg_search

First pass at implementing sort_by using opts hash.
Search bar for full text search.

Choose location from drop down to search by location.
Sort_by method takes a params hash, parses it and delegates the sort task to the appropriate method. Now, this is just location.
Replaces location drop down with buttons. Name/values structured to play nicely with sort_by methods
Deletes non-form styles from form.css to preserve integerity of this file as a 'bootstrap' sort of sosource file.
Removes commented-out code
Merge pull request #20 from jonathanpeterwu/search

Search + sort_by
merge from master