Exceptions while still starting up

[Charles Solar]

Instances start 2 message handling systems, one for events from eventstore, one for commands from nservicebus.
Some instances are initially throwing: "StructureMap.StructureMapConfigurationException: No default Instance is registered and cannot be automatically determined for type 'NServiceBus.IMessageSession'" for a few seconds upon startup because the event listener got up before nservicebus finished setting up.

Need to add a check in event subscriber to not send events until NSB is ready

[Charles Solar]

Fixed this by not holding up bus initialization and changing the bus instance NSBOobHandler uses to publish