LP#1694497: fix record links on 2nd+ page of grouped results

LP#1694497: fix record links on 2nd+ page of grouped results

This patch fixes a bug wherein the second (and subsequent)
pages of search results in the public catalog (when group
formats and editions is in effect) does not correctly generate
links to hits that are not part of of a multi-bib metarecords.

To test
-------
1. Keyword search concerto for "piano"
2. Check the box for "Group formats and Editions"
3. Click Page 2
4. Click any result that is not a group (missing the parentheses after
   the title). You will get redirected to the my account page.
5. Apply the patch and do steps #1-4 again. This time, you should
   end up on the record details page.

Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>
Signed-off-by: Jason Boyer <jboyer@library.in.gov>
Signed-off-by: Dan Wells <dbw2@calvin.edu>