CERN access: filter registrations by CERN access request status

When I manage the list of registrations to an event (at https://indico.cern.ch/event/XXXX/manage/registration/YYYY/registrations/), it would be great to see all CERN site access requests together. Either by customizing the list and filtering by CERN access request status (preferably), or at least sorting by this column.

Start at the event registration management page linked in the issue and inspect how the registration list exposes customization, filtering, and the CERN access request status column. Done means managers can filter registrations by CERN access request status, preferably, or at least sort by that column.

Written by the indexing model from the issue text.