Update Request and Response Object to include Notification Info

[cabishop]

Update request/response object to include notification information to help the router determine if a request is in reaction to a notification.

For example, if the notification is "Alert: Someone just entered the building!" and the next request is "Who?" the request should be routed to the Agent that sent the notification. But if the notification is "Alert: Someone just entered the building!" and the next request is "What is the score of the Patriots game?" the request should not be routed to the Agent that sent the notification.