Built a new routine for intro tours.

public/js/ff/intro/intro.js

@@ -6,9 +6,28 @@
  * See the LICENSE file for details.
  */
 
-/** global: route_for_tour */
+/** global: routeForTour, routeStepsUri, routeForFinishedTour */
 
 $(function () {
     "use strict";
     //alert('show user intro for ' + route_for_tour);
-});
+    $.getJSON(routeStepsUri).done(setupIntro)
+});
+
+function setupIntro(steps) {
+
+    var intro = introJs();
+    intro.setOptions({
+                         steps: steps,
+                         exitOnEsc: true,
+                         exitOnOverlayClick: true,
+                         keyboardNavigation: true,
+                     });
+    intro.oncomplete(reportIntroFinished);
+    intro.onexit(reportIntroFinished);
+    intro.start();
+}
+
+function reportIntroFinished() {
+    $.post(routeForFinishedTour);
+}