Zoom map to markers.

ticdesk_org/static/ticdesk_org/map.js

 function map_init(map, options) {
  $.getJSON(geojson, function (data) {
-  L.geoJson(data, {
+  var layer = L.geoJson(data, {
    onEachFeature: function (feature, layer) {
     layer.bindPopup(feature.properties.popupContent);
    }
   }).addTo(map);
+
+  map.fitBounds(layer.getBounds());
  });
 }