Bug 26765: Make author span a clickable link on OPAC results list

Bug 26765: Make author span a clickable link on OPAC results list

This patch follows the markup of the staff interface catalog results
XSLT to make authors in OPAC search results clickable.

The patch also makes some minor CSS changes so that title and author
links are not too crowded together.

To test, apply the patch and rebuild the OPAC CSS.

- Perform a catalog search in the OPAC which will return multiple
  results.
- In the search results, each author in each search result should be a
  separate clickable link.
- The margins around the result title and authors should be
  comfortable.
- Confirm that each link takes you to the correct author search.

Signed-off-by: Barbara Johnson <barbara.johnson@bedfordtx.gov>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>