GF-9908 ImageView Pin Zoom Defect Fixed

Issue: When double clicking the yellow or red spot of image, image does
not be enlarged.
Fixes:
Added doubleClick handler to ImageViewPin.js which bubbles up event to
its parent.
Added handler to ImageView.js to handle bubble event from pin and
enlarge the image.

Enyo-DCO-1.1-Signed-off-by: Anugrah Saxena <anugrah.saxena@lge.com>