* [NOD-557] Remove regTest network.
* [NOD-557] Remove remaining references to regTest.
* [NOD-557] Move newHashFromStr from params.go to params_test.go.
* [NOD-557] Rename test to network in register_test.go.
* [NOD-557] Replaced removed tests in TestDecodeAddressErrorConditions.
* [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.
