switch to GeoJSON response format instead of GPX:

- use BRouter track stats
- remove leaflet-gpx plugin

index.html

@@ -61,7 +61,6 @@
     <script src="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet-src.js"></script>
 
     <script src="http://leaflet.github.io/Leaflet.draw/leaflet.draw-src.js"></script>
-    <script src="bower_components/leaflet-gpx/gpx.js"></script>
     <!--
     <script src="lib/spin.min.js"></script>
     <script src="lib/leaflet.spin.js"></script>