Bug 17253: Koha::AuthorisedValues - Remove GetKohaAuthorisedValues

Bug 17253: Koha::AuthorisedValues - Remove GetKohaAuthorisedValues

This patch replaces the call to C4::Koha::GetKohaAuthorisedValues with
Koha::AuthorisedValues->search_by_koha_field

Test plan:
AV descriptions should be displayed on the following pages:
- XSLT view - location and ccode
- Bibliographic detail, moredetail and OPAC pages - location, ccode, copynumber
- returns - location
- opac-basket - ccode, location
- The 3 reports: catalogue_stats.pl, issues_stats.pl and
  reserves_stats.pl - location, ccode

Signed-off-by: Claire Gravely <claire_gravely@hotmail.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>