changed progress property name and type
changed progress property name and type

Float works better with NSProgrossView

sunfei/Just,f22x/Just,msdgwzhy6/Just,f22x/Just,jianwoo/Just,jianwoo/Just,sunfei/Just,JustHTTP/Just,sunfei/Just,jianwoo/Just,alvinvarghese/Just,alvinvarghese/Just,alvinvarghese/Just,msdgwzhy6/Just,msdgwzhy6/Just,f22x/Just,JustHTTP/Just