ENYO-345: Convert CSS property names with dash to JavaScript-style name.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
ENYO-345: Use specific Firefox version for conditional, to coincide with when fix will be implemented.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #936 from enyojs/ENYO-345-aarontam-master

ENYO-345 (master)

Integrated-By: Aaron Tam (aaron.tam@lge.com)