CSS for results hitlist

some css for the results hit list (catalog_search_results.php)
catalog_search.php changes

renamed values passed to be more consistent with the actual filter names
(eg. library -> libraryFilter)
catalog_search_results.php

-modified back to go to catalog_search.php
-modified array key values
-added includeAvailabilityInfo to REST query
-added first and last hit displayed out of total
-changed hit list from ul to ol
catalog_search_result_record.php

-added terms and searchfilters to the "Go Back" link so it shows the
previous query
-added checks for fields and output them only if they exist and are not
empty
-restructured the call number view (li->div->div->etc.)