Tolerate change in CartoCSS error message between 0.9.3 and 0.9.5
Tolerate change in CartoCSS error message between 0.9.3 and 0.9.5

CartoDB/Windshaft,wsw0108/Windshaft,HydroLogic/Windshaft,CartoDB/Windshaft,manueltimita/Windshaft,HydroLogic/Windshaft,manueltimita/Windshaft,manueltimita/Windshaft,wsw0108/Windshaft,wsw0108/Windshaft,HydroLogic/Windshaft,CartoDB/Windshaft