remove redundant calculations when components are not visible
#FEC-1188 #comment don't enable player after multicast start time timeout has passed
#FEC-1177 #comment handle multicast play/pause, online/offline issues
#FEC-1187 #comment added support in stretchVideo flashvar
fix thumbnail on multicast
code fix
fix comment
code enhancements
Merge pull request #596 from kaltura/multicastFix

Multicast fix