* Fix bug in demobench. Explorer didn't show correctly location of a node.
There was no nearestCity override in config.
* Remove nearestCity from node configuration. Now information about the location is always taken from
node's legal name. If not present - exception on node startup.
* Add X500Name.locationOrNull that soft fails when location is not in X500 name. Address PR comments.
* Remove unused imports.
* Make the network registration process more verbose
* removed gradle task for building standalone jar for the certificate signing request utility
* Added a flag "--initial-registration" to the corda jar to start the registration
