fix rezoning on event mutation
fix rezoning on event mutation

kleisauke/fullcalendar,oleg-babintsev/fullcalendar,laoneo/fullcalendar,kleisauke/fullcalendar,laoneo/fullcalendar,arshaw/fullcalendar,pietervisser/fullcalendar,fullcalendar/fullcalendar,oleg-babintsev/fullcalendar,oleg-babintsev/fullcalendar,kleisauke/fullcalendar,pietervisser/fullcalendar,kleisauke/fullcalendar,arshaw/fullcalendar,fullcalendar/fullcalendar,pietervisser/fullcalendar,arshaw/fullcalendar,laoneo/fullcalendar,fullcalendar/fullcalendar,arshaw/fullcalendar,fullcalendar/fullcalendar