ENYO-577: Fix backward-compatibility for deprecated uppercase properties.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
ENYO-577: Giving precedence to legacy uppercase properties

...to ensure 100% backward compatibility.

Enyo-DCO-1.1-Signed-Off-By: Gray Norton (gray.norton@lge.com)
Merge pull request #1870 from enyojs/ENYO-577-aarontam

ENYO-577: Fix backward-compatibility for deprecated uppercase properties.

Reviewed-By: Ryan Duffy (ryan.duffy@lge.com)
Integrated-By: Gray Norton (gray.norton@lge.com)