suppress calls to progress handlers for IE8
suppress calls to progress handlers for IE8

Issue: ENYO-787
Enyo-DCO-1.1-Signed-off-by: Ryan Duffy (ryan.duffy@lge.com)

beni55/enyo,soapdog/enyo,kustomzone/enyo,wikieswan/enyo,PKRoma/enyo,kustomzone/enyo,enyojs/enyo,soapdog/enyo,bright-sparks/enyo,mcanthony/enyo,enyojs/enyo,PKRoma/enyo,mcanthony/enyo,bright-sparks/enyo,beni55/enyo,wikieswan/enyo