Two fixes to appointment availability and capacity.
- Cancelling a booking that was using a room now immediately makes the affected appointment times bookable again, instead of leaving them shown as unavailable.
- This now also works when a class picks its room automatically from a group of rooms - previously, freeing up the last room in that group did not reopen the blocked times.
- If you change the number of places on one session in the schedule editor, that session now uses your number when working out how many spaces are left, instead of falling back to the number set on the class.
