Bug 12352: Patron modification request page: Add link to patron record

Bug 12352: Patron modification request page: Add link to patron record

The patron modification request page in the staff client does show
the name and home library of a patron, but there is no way to
go to the patron record. This patch adds a link to the patron details.

Extras: changes display of patron name, so a missing firstname won't
result in an extra , showing.

To test:
- Make some update requests from different patron accounts in the OPAC
- Go to the patron modification request page in staff
- Verify a link 'Patron details' now shows on each entry and
  works correctly

Followed test plan. Works as expected. QA tools OK.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Jonathan Druart <jonathan.druart@koha-community.org>
Not sure the "Patron details" link is at the best place, but I don't
have something better to suggest.
Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>