search page fixes

People - added location and types of art fields. If field doesn't exist
return with n/a. Essays added author and institution fields. Fixed
links so clicking on essay search results brings you to essay page.
Need to change country results still.

Images-added cap of 25 to returned displayed results of images, because
some seraches rendered an obnoxious amount of images. Want to add
function to view more, or otherwise randomize images that are returned
to be more representative of topic rather than exhaustive.