Bug 20760: Fill authorised values in svc framework

Bug 20760: Fill authorised values in svc framework

To test:
 1 - Map a marc field to an authorised value in the default framework -
say 300$c -> CCODE
 2 - Open the advanced cataloguing editor
 3 - Create a new field 300$c - note there is no dropdown
 4 - browse to: /cgi-bin/koha/svc/cataloguing/framework?callback=define
 5 - Note the many instance of
Koha::Schema::ResultSet::AuthorisedValueCategory->HASH...
 6 - Apply patch
 7 - Restart memcached and plack
 8 - reload/recreate record in rancor
 9 - Note that 300$c is now a dropdown as expected
10 - repeate 4
11 - note the authorised values look correct in response

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit ac390bd228c6ea7eab7c8b694a378a837f8da464)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>