Invalid types were being mapped to addresses, closes #866

Conflicts:
	src/NServiceBus.Core/Unicast/Config/ConfigUnicastBus.cs
Ensuring a product update is done correctly.
Enable WCF hosting in unobtrusive mode, fixes #889

Conflicts:
	src/NServiceBus.Core/Hosting/GenericHost.cs
	src/NServiceBus.Core/Hosting/Wcf/WcfManager.cs