Restructure notes URLs according to standard rails conventions

app/views/notes/_note.gpx.builder

@@ -0,0 +1,15 @@
+xml.wpt("lon" => note.lon, "lat" => note.lat) do
+  xml.desc do
+    xml.cdata! render(:partial => "description", :object => note, :formats => [ :html ])
+  end
+
+  xml.extension do
+    if note.status = "open"
+      xml.closed "0"
+    else
+      xml.closed "1"
+    end
+
+    xml.id note.id
+  end
+end