Update airport apron mapnik map key

config/key.yml

@@ -21,7 +21,7 @@ mapnik:
   - { min_zoom: 17, name: tram_only, width: 52, height: 2, fill: "#6e6e6e" }
   - { min_zoom: 12, max_zoom: 19, name: cable, image: cable.png }
   - { min_zoom: 11, max_zoom: 19, name: runway, image: runway.png }
-  - { min_zoom: 12, max_zoom: 19, name: apron, image: apron.png }
+  - { min_zoom: 11, name: apron_only, width: 26, height: 10, fill: "#dadae0" } # landcover.mss
   # administrative boundaries: admin.mss
   - { name: admin, width: 52, height: 2, fill: "#8d618b88" }
   # landcover z5: landcover.mss, water.mss

config/locales/en.yml

@@ -2303,9 +2303,7 @@ en:
           runway:
             - Airport Runway
             - taxiway
-          apron:
-            - Airport apron
-            - terminal
+          apron_only: "Airport apron"
           admin: "Administrative boundary"
           orchard:
             - Orchard