Allow Taxi trips to be rescheduled

Allows bookings that are already scheduled to taxi runs to be rescheduled or unscheduled if the Reschedule bookings already scheduled or Unschedule All Selected First (Unschedule Action dropdown list) checkboxes are selected.

If this check box is cleared, bookings on taxi runs are not rescheduled or unscheduled, even if the Reschedule bookings already scheduled or Unschedule All Selected First checkboxes are selected.