Retaining source URL in addition to normalized URL

Author: rsimon

docs/peripleo-fitzwilliam.js

@@ -24,6 +24,7 @@ const featureToNode = (feature, name) => {
 
   // For convenience when mapping
   node.properties.id = id;
+  node.properties.url = feature['@id'];
   node.properties.dataset = name;
 
   return node;