Attempt to add order-by dropdown to facets column

The main hurdle for me with this is figuring out the javascript to
automatically refresh the page once a different option has been
selected. I may also need to refactor the previous order-by work into
the search model.
Order search results by last name or last updated
[broken] sort search with javascript dropdown
fix sort js
[fixed] sort search results via dropdown menu

Also print "No results found" if no search results are returned.
Merge pull request #37 from ucsd-ra/sort-search

Sort search results via drop-down menu