We now have quite a few CRUD-authority-records pages in various modules' settings – loan-types and material-types in ui-items, patron-groups in ui-users – and more to come (e.g. address-types in
UIU-79). That's resulting in code duplication.
We should abstract out the generic parts of these facilities, provide a generic authority-record-CRUDding component, and rework the various CRUD areas (including the new one) to use it.