attempt at url() relative path fix
attempt at url() relative path fix

whitelynx/carto,mapbox/carto,madeinqc/carto,stefanklug/carto,midnightcomm/carto,CartoDB/carto,CartoDB/carto,1ec5/carto,pnorman/carto,gravitystorm/carto,clhenrick/carto,tomhughes/carto