Add geoname type to most layers

The Geonames dataset includes lots of different kinds of places, so add
them to the mapping.

helper/type_mapping.js

@@ -61,13 +61,13 @@ var SOURCE_TO_TYPE = {
  */
 var LAYER_TO_TYPE = {
   'venue': ['geoname','osmnode','osmway'],
-  'address': ['osmaddress','openaddresses'],
-  'country': ['admin0'],
-  'region': ['admin1'],
-  'county': ['admin2'],
-  'locality': ['locality'],
+  'address': ['osmaddress','openaddresses', 'geoname'],
+  'country': ['admin0', 'geoname'],
+  'region': ['admin1', 'geoname'],
+  'county': ['admin2', 'geoname'],
+  'locality': ['locality', 'geoname'],
   'localadmin': ['local_admin'],
-  'neighbourhood': ['neighborhood']
+  'neighbourhood': ['neighborhood', 'geoname']
 };
 
 var LAYER_ALIASES = {

test/unit/sanitiser/_layers.js

@@ -43,7 +43,7 @@ module.exports.tests.sanitize_layers = function(test, common) {
     t.end();
   });
   test('address (alias) layer', function(t) {
-    var address_layers = ['osmaddress','openaddresses'];
+    var address_layers = ['osmaddress','openaddresses','geoname'];
     var raw = { layers: 'address' };
     var clean = {};
 
@@ -76,7 +76,7 @@ module.exports.tests.sanitize_layers = function(test, common) {
     t.end();
   });
   test('address alias layer plus regular layers', function(t) {
-    var address_layers = ['osmaddress','openaddresses'];
+    var address_layers = ['osmaddress','openaddresses','geoname'];
     var reg_layers   = ['admin0', 'locality'];
 
     var raw = { layers: 'address,country,locality' };