Show lines connecting transport stops on map

Closes: #104

templates/trip_page.html

@@ -93,6 +93,7 @@
 
 <script>
 var coordinates = {{ coordinates | tojson }};
+var routes = {{ routes | tojson }};
 
 // Initialize the map
 var map = L.map('map').fitBounds(coordinates.map(function(station) {
@@ -123,6 +124,11 @@ coordinates.forEach(function(item) {
   marker.bindPopup(item.name);
 });
 
+// Draw lines for routes
+routes.forEach(function(route) {
+  L.polyline(route, {color: 'blue'}).addTo(map);
+});
+
 </script>
 {% endif %}
 {% endblock %}