Bug 25244: Add specific aria-label to search results

Bug 25244: Add specific aria-label to search results

This patch adds an arai-lebel to the select checkboxes on the search
results page of the OPAC.

Test plan
1/ Perform a search that will yield some results
2/ Inspect the 'checkbox' on the left side of the results table
3/ Note that there is no arai-label
4/ Apply patch
5/ Refresh the search results page
6/ Inspect the 'checkbox' on the left side of the results table
7/ Note that the aria-label now appears and contains relavant
information
8/ Signoff

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
Bug 25244: (follow-up) QA corrections

Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>