[jwplayer] fixed youtube html5 ie issues [Fixes #83957180]

[jwplayer] fixed youtube html5 ie issues [Fixes #83957180]

When using a Youtube embed in HTML5 mode, the skin/control bar gets removed in IE10/IE11 (in both JW6.10 & JW6.11)

It seems that as soon as the player loads, the jwplayer skin disappears and it just looks like a standard YouTube embed without JW.