BHV-6832: Fire onEnd when rAF animation has actually finished.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #709 from enyojs/BHV-6832-aarontam

BHV-6832: Fire onEnd when rAF animation has actually finished.

Reviewed-By: Cole Davis (cole.davis@lge.com)