Bug 15407: Koha::Patron::Categories - remove sql queries in some pl and pm

Bug 15407: Koha::Patron::Categories - remove sql queries in some pl and pm

This patch replaces sql queries done in some pl script and in
C4::Reports::Guided.
Since we have now a Koha::Patron::Categories module, we should use it
where it is possible.

Test plan:
- Prerequisite: Be sure you have several patron categories created, with
  different option enabled, and limit some to certain libraries.
- On the 'Circulation and fine rules' admin page (admin/smart-rules.pl),
  all the patron categories should be displayed (even the ones limited to
  another library), ordered by description. Try to add/update existing rules.
- On the overdue rules page (tools/overduerules.pl), all the patron
  categories with overduenoticerequired set should be displayed.
  Try to add/update existing rules.
- On the following reports:
    reports/borrowers_stats.pl
    reports/issues_avg_stats.pl
The patron categories should be displayed. Note that there is an
inconsistency with these 2 reports: the patron categories limited to
other libraries are displayed on them, when they are not on the other
reports. This should certainly be fixed (on another bug report).

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>