Bug 10902: Highlight patrons from logged-in library in patron searches

Bug 10902: Highlight patrons from logged-in library in patron searches

This patch alters a few different patron search interfaces so that
patrons from the currently-logged-in library are highlighted in a way
that differentiates them from other patrons.

To test, apply the patch and rebuild the staff interface CSS
(https://wiki.koha-community.org/wiki/Working_with_SCSS_in_the_OPAC_and_staff_client).

- In Administration -> System preferences, make sure the
  PatronAutoComplete preference is enabled.
- In the "Check out" tab in the header, type a partial patron name which
  will return multiple results and wait for the autocomplete menu to
  appear..
  - Patrons in the autocomplete results should show the branchcode, and
    patrons from the currently-logged-in library should be highlighted
    in green.
- Submit your partial name in the "check out" tab.
  - In the search results the branch name of patrons from the
    currently-logged-in library should be similarly highlighted.
- Go to patrons browse for patrons. These results should be highlighted
  as in the previous steps.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Sally <sally.healey@cheshiresharedservices.gov.uk>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>