fix some demos

demos/external-dragging-2cals.html

@@ -14,15 +14,14 @@
     -----------------------------------------------------------------*/
 
     var containerEl = document.getElementById('external-events-list');
-    var eventEls = Array.prototype.slice.call(
-      containerEl.querySelectorAll('.fc-event')
-    );
-
-    eventEls.forEach(function(eventEl) {
-      new FullCalendar.Draggable(eventEl, {
-        title: eventEl.innerText.trim(),
-        stick: true
-      });
+
+    new FullCalendar.Draggable(containerEl, {
+      itemSelector: '.fc-event',
+      eventData: function(eventEl) {
+        return {
+          title: eventEl.innerText.trim()
+        }
+      }
     });
 
     /* initialize the calendar

demos/json.html

@@ -23,7 +23,7 @@
       eventLimit: true, // allow "more" link when too many events
       events: {
         url: 'php/get-events.php',
-        error: function() {
+        failure: function() {
           document.getElementById('script-warning').style.display = 'block'
         }
       },