LP#1075401: adjust two fields in the legacy Serials Copy Template editor

LP#1075401: adjust two fields in the legacy Serials Copy Template editor

This commit changes the Age Protection and Circ as Type fields to links in
the fm_IDL.xml to allow the template to read the data in the fields. It also
changes the owning_lib reporter type to org_unit so the org unit shortname
is displayed in the grid view, along with fixing the config.floating_group cfg
FM settings so that the name is displayed instead of the ID.

[Note from Galen: the forthcoming web staff serials module's serial
 copy template editor already provided drop-downs for those two fields,
 but the IDL changes remain beneficial.]

Signed-off-by: Michele Morgan <mmorgan@noblenet.org>
Signed-off-by: Josh Stompro <stomproj@larl.org>
Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>