Component/InfiniteContainer: allowing .bind() for firstLoad
Component/InfiniteContainer: allowing .bind() for firstLoad

firstLoad as a flag couldn't be used without model before. This change
fixes that.

behance/BeFF,jrefano/BeFF,mrjoelkemp/BeFF,hzoo/BeFF,behance/BeFF,hzoo/BeFF,Aintaer/BeFF,Aintaer/BeFF