Search appearance

This builds on the work @blisteringherb did on getting an image add to each search result and updating the appearance for the main search page. I made some style tweaks based on the mocks and refactored it a little to use the new neue theme functions @aaronschachter and I worked on. 

cc: @DFurnes @weerd @barryclark 
@deadlybutter This is a check to add the search form to the page, if the search form exists. I figured we would want to show the search form regardless if there were results or not. Is that the case?