Adds extra logging.

libs/app.bundle.js

         _dataChannels.some(function (dataChannel) {
             if (dataChannel.readyState == 'open')
             {
+                console.log('sending data channel notification that the selected endpoint changed: ', userResource);
                 dataChannel.send(JSON.stringify({
                     'colibriClass': 'SelectedEndpointChangedEvent',
                     'selectedEndpoint':
 }
 
 },{}]},{},[1])(1)
-});
+});

modules/RTC/DataChannels.js

         _dataChannels.some(function (dataChannel) {
             if (dataChannel.readyState == 'open')
             {
+                console.log('sending selected endpoint changed ' 
+                    + 'notification to the bridge: ', userResource);
                 dataChannel.send(JSON.stringify({
                     'colibriClass': 'SelectedEndpointChangedEvent',
                     'selectedEndpoint':