Added a new event, EventAlertUser, that is used to alert the user to a problem...

Added a new event, EventAlertUser, that is used to alert the user to a problem and is in the Common module so that it is accessible to all other modules.  When this event is sent, EventManager will query the Application Type.  When the Application Type is a GUI application, the event is propagated like other events and will be received by the GUI manager which will then displayed the alert's information to the user in the GUI.  If there is not a GUI, the alert is logged at the severe level.