fix IE11 scrollbar pixel rounding problem
fix IE11 scrollbar pixel rounding problem

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