- Fix: remove / update dangling references on data delete / rename in arr config.
- Fix: Show dangling references in data selector so they can be removed after git operation (cascade operations not possible).
- Fix: improve onclick behaviour so that button clicks in arr modal don't incorrectly trigger save / update.
- Refactor: Turn data selector into a non modal component - now exists on the same pane as the arr modal.
- Feat: Add search / sort functionality to data selector. Sorted A-Z by default now.
