Booking a class that needs a court or a piece of equipment now works right down to the last free unit.
- A customer who has just reserved the last available court or item is no longer told the class cannot be booked.
- The booking check now looks past the customer's own reservation, so only items genuinely taken by other customers count as unavailable.
- Items held by other customers are still treated as unavailable, so two customers cannot end up with the same court.
