ISTWCMS-5789: adding media so that it actually works

src/patterns/03-layouts/_index.scss

@@ -6,6 +6,7 @@
 @forward 'header/header';
 @forward 'layout/layout';
 @forward 'layout/layout-base';
+@forward 'media/media';
 @forward 'node/node';
 @forward 'region/region';
 @forward 'sidebar/sidebar';