When working on #143 it was noticed that the Notification event was causing Operator Interface update issues due to timing issues.
- The Notification Event is only used for the Operator Interface.
- It has a number of MultiPlug Subjects noting the state of the system
- If the states change in a unknown order, the User Interface can glitch and it's state machine can get muddled.
- The System Status Subject was casing a issue and a new event has been created for that.
- For good practice, and to remove future issues, all Subjects should be given there own event.
When working on #143 it was noticed that the Notification event was causing Operator Interface update issues due to timing issues.