Display default FPRules
Display default FPRules

Previously, default normalization and characterization rules would be
hidden. This displays both categories so they can be customized.

Fixes #6976.

artefactual/archivematica-fpr-admin,artefactual/archivematica-fpr-admin,artefactual/archivematica-fpr-admin,artefactual/archivematica-fpr-admin