* [NOD-1538] Correct messages.proto.
* [NOD-1538] Fix invalid message handling.
* [NOD-1538] Fix mempool not wrapping consensus errors.
* [NOD-1538] Extract wrapping logic to a separate function.
* [NOD-1538] Extract wrapping logic to an even better separate function.
* [NOD-1286] Close router from netConnection.Disconnect
* [NOD-1286] Close router in grpc errors as well
* [NOD-1286] Fix typo
* [NOD-1286] Rename isConnected->isRouterClosed
* [NOD-1223] Delete unused files/packages.
* [NOD-1223] Move signal and limits to the os package.
* [NOD-1223] Put database and dbaccess into the db package.
* [NOD-1223] Fold the logs package into the logger package.
* [NOD-1223] Rename domainmessage to appmessage.
* [NOD-1223] Rename to/from DomainMessage to AppMessage.
* [NOD-1223] Move appmessage to the app packge.
* [NOD-1223] Move protocol to the app packge.
* [NOD-1223] Move the network package to the infrastructure packge.
* [NOD-1223] Rename cmd to executables.
* [NOD-1223] Fix go.doc in the logger package.
