Bug 15407: Koha::Patron::Categories - replace GetborCatFromCatType

Bug 15407: Koha::Patron::Categories - replace GetborCatFromCatType

This unnecessary complicated subroutine returned an arrayref and an
hashref of the patron categories available for the logged in user, for a given
category_type, ordered by categorycode.
This can now be done with the search_limited method.

Test plan:
- Same prerequisite as before
For the following pages, you should not see patron categories limited to other
libraries. They should be ordered as before this patch, by categorycode.
- Add/edit a patron, change his/her patron category value.
- On the 3 following reports:
    reports/bor_issues_top.pl
    reports/borrowers_out.pl
    reports/cat_issues_top.pl
The display for these 3 reports are different than the 2 from the first
patch (borrowers_stats.pl issues_avg_stats.pl): they are ordered by
categorycode and the ones limited to other libraries are not displayed
(should certainly be fixed).

Note that the big part of this patch has already been tested before
(update child related: CATCODE_MULTI).

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>