[FIXED JENKINS-19896] removing unprocessed -moz prefixed css declarations

specifically: -moz-box-shadow, -moz-border-radius, -moz-opacity, and
-moz-text-overflow.

unprefixed box-shadow has been supported since firefox 4.
see: https://developer.mozilla.org/en-US/docs/Web/CSS/box-shadow

unprefixed border-radius has been supported since firefox 4.
see: https://developer.mozilla.org/en-US/docs/Web/CSS/border-radius

unprefixed text-overflow has been supported since firefox 7.
see: https://developer.mozilla.org/en-US/docs/Web/CSS/text-overflow

unprefixed opacity has been supported since firefox 1.
see: https://developer.mozilla.org/en-US/docs/Web/CSS/opacity
Merge pull request #16 from sghill/FIX-JENKINS-19896

[FIXED JENKINS-19896] removing unprocessed -moz prefixed css