LPS-34124 The theme deploy process always regenerate all the css files

Please, take a look at the http://issues.liferay.com/browse/LPS-3412 for a deep explanation.

It depends on:
https://github.com/sergiogonzalez/liferay-portal/pull/729

We need the second commit https://github.com/achaparro/liferay-plugins/commit/31a284edea0e45635acb67c476f552c912ae2db8 because of we copy the sass cache from the parent theme every time we do "ant deploy" so the css will be always parsed since the file dates are always different from the modified files.

Thanks.