Increase weights for airports.

helper/category_weights.js
	-This should now make a record like "Newark Airport" appear
	above, say, "Newark Airport Station".

helper/category_weights.js

@@ -1,8 +1,8 @@
 module.exports = {
   'transport': 10,
-  'transport:air': 10,
-  'transport:air:aerodrome': 10,
-  'transport:air:airport': 10,
+  'transport:air': 20,
+  'transport:air:aerodrome': 20,
+  'transport:air:airport': 20,
   'recreation': 10,
   'religion': 10,
   'education': 10,
@@ -111,4 +111,4 @@ module.exports = {
   'food:cuisine:vietnamese': 10,
   'food:cuisine:westphalian': 10,
   'transport:rail': 10
-};
+};