Addition of Model base class, carrying persistent id.  Added to Provider model.
Hermes providers moved inside Hermes, from the Service Broker.
Base class for Observers created as CNHermesSignalAdapter.  Refactored Account, Provider to use.
AccountSpec tests passing for Account listing as CNAccount objects with related CNProviders.
Merging of account auth improvements from development branch.
Refactoring app to use Reactive Accounts.
CNAccount refactored into Icing2 app.
Merge branch 'feature/ReactiveAccounts' into development