* Reordered functions in the network map visualiser as a part of an ongoing refactor.
* Started separating concerns out of the NetworkMapVisualiser.
* Moved more view logic to the view class.
* Split out some of the progress tracker visual logic out into the view.
* Finished partial refactor to push model data into the model class.
* Moved some more view and model logic from controller to model.
The RPC mechanism uses message queues and is essentially conventional except for the fact that it supports marshalling observables. An observable encapsulates a stream of ongoing events, and server-side observables sent to the client are automatically bound to message queues and managed by Artemis.
This moves a lot of the test support code into its own package which is only imported for tests,
so it's not shipped as a part of core Corda. The node currently depends on this support code to
compile, although future work could try to separate this out. This change highlights that parts
of production code is dependent on test elements (i.e. dummy keys), and makes it harder for
such accidental crosses to occur later.
An integration test category is also added as part of this work, to contribute towards COR-345.
