Updated sass compilation configuartion so that it runs as part of the build and outputs results to the correct location.
Updated sass compilation configuartion so that it runs as part of the build and outputs results to the correct location.

ONSdigital/tredegar,ONSdigital/babbage,ONSdigital/babbage,ONSdigital/babbage,ONSdigital/tredegar,ONSdigital/tredegar,ONSdigital/babbage,ONSdigital/tredegar