update default referrer value to point to dashboard

vars.py

@@ -3,4 +3,4 @@ password = ''
 key = ''
 broker_url =  'amqp://' + id + ':' + password + '@ohpc:5672/'
 message_queue =  broker_url + 'socketio'
-default_referrer = "https://docs.uabgrid.uab.edu/wiki/Cheaha_Quick_Start"
+default_referrer = "/pun/sys/dashboard"