Bug 5652: (follow-up) include subtitle in hyperlink

Bug 5652: (follow-up) include subtitle in hyperlink

This follow-up patch makes the subtitle part of the same
hyperlink as the title, maintaining consistency with other
pages in the staff interface such as list contents.

To test:

[1] Make sure that the Keyword to MARC mapping includes
    mappings to 'subtitle'.
[2] Find a biblio that has both title and subtitle.  Check
    it out to one patron and place it on hold for another.
[3] In the checkout and patron details pages, verify that
    the entry for this bib in the list of checked out titles
    or hold requests includes both title and subtitle in
    the same hyperlink.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 05019c13607908689581285abc39735923a564f5)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>