Show roads earlier

data.yml

@@ -108,7 +108,7 @@ Layer:
       table: |-
         ( SELECT *
           FROM (
-            SELECT * FROM road_z4 WHERE z(!scale_denominator!) = 4
+            SELECT * FROM road_z4 WHERE z(!scale_denominator!) BETWEEN 4 AND 5
             UNION ALL
             SELECT * FROM road_z5 WHERE z(!scale_denominator!) = 5
             UNION ALL
@@ -122,8 +122,8 @@ Layer:
       user: osm
     description: Buildings
     fields: 
+      class: String
       scalerank: Number
-      type: String
     properties: 
       "buffer-size": 4
     srs: +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over