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 
Cool. Yeah, renaming it might just be enough :)

Alternatively, which may be a bit much, but maybe `paraneue_dosomething_get_search_results_gallery()` is called by both 404 and regular search page, but then this func calls `paraneue_dosomething_get_search_results()` to collect the results, and then calls the theming on those results...? Would still be DRY and a bit more modular since then you can still retrieve results without theming as gallery if that's ever needed. Not sure if that makes any sense. Just dumping my thoughts :)