Merging develop into main
- apbs/sites/tierpension-haas#29 Properly handle date ranges that are NULL
- apbs/sites/tierpension-haas#29 Add pager to customer animals and bookings
- Fix field name in delivery entity
- apbs/sites/tierpension-haas#24 New button "Complete contract"
- apbs/sites/tierpension-haas#28 Add contracts to dashboard