Implementation for issue #8

* Add Backbone plumbing for search for foods and display the results in both a list and detail view
* Add Rails plumbing for the foods api to fetch foods
* Create a new live data footer partial that can be attached to the bottom of each
Fixup route definitions and fix bug in food search

* Search results were appended and not replaced; we now replace with a new list when a new search is submitted
* Change some API routes to resources