rework dragging class usage to wrap in rAF and avoid FOUC-ishness
rework dragging class usage to wrap in rAF and avoid FOUC-ishness

Enyo-DCO-1.1-Signed-off-by: Ryan Duffy (ryan.duffy@lge.com)

enyojs/enyo,PKRoma/enyo,enyojs/enyo,PKRoma/enyo