refactor announcement modal and add nodeschool-challenges

app.js

@@ -230,6 +230,7 @@ app.get('/deploy-a-website', resourcesController.deployAWebsite);
 app.get('/gmail-shortcuts', resourcesController.gmailShortcuts);
 app.get('/control-shortcuts', resourcesController.controlShortcuts);
 app.get('/control-shortcuts', resourcesController.deployAWebsite);
+app.get('/nodeschool-challenges', resourcesController.nodeSchoolChallenges);
 app.get('/stats', function(req, res) {
     res.redirect(301, '/learn-to-code');
 });