made UI changes to the app

1. re-rendering div for all possible events (except account create successfully - in which case dashboard is loaded)
2. reused javascript code to print a message to dom
3. print error message on buttonClick

vars.py

-id = 'reggie'
-password = 'reggie' 
-key = '1234'
-broker_url =  'amqp://' + id + ':' + password + '@master:5672/'
-message_queue =  broker_url + 'socketio'
-default_referrer = "/pun/sys/dashboard"
-username_key = ["REMOTE_USER"]
-fullname_key = ["REMOTE_USER_DISPLAYNAME"]
-email_key = ["REMOTE_USER_MAIL"]