rename RemoteNotifier to Notifier
no need to set id of router at boot
move Notifier config to its own config object
move Router config to its own config object
move node configuration from LocalNode to Node

The LocalNode config object is no longer needed.

This removes the signing_key config. That will probably be moved to an
extension of the base Node.
remove global config

All the various pieces now have their own config objects.
move node registry to Node.registry
use Node instead of Telecine::Node