Merge pull request #438 from quasart/proposed-route

fix proposed route no more rendered with dashes

project.mml

@@ -1180,6 +1180,7 @@ Layer:
           SELECT way, 'lcn' as type, tags->'lcn' AS state, 4 as priority
           FROM planet_osm_line
           WHERE tags->'lcn' IS NOT NULL AND tags->'lcn' NOT IN ('no', 'none')
+            AND highway IS NOT NULL
         ) as routes_from_relations_and_ways
         ORDER BY priority DESC
       ) AS data