Improve the connection handling in the remoteobjects generator template

At the moment we can only provide a SERVER_CONF environment variable to provide more options to the generated backend and server.

Atleast for the server side it should be easy to add more methods which allow the manual written code to have more control over the RemoteObject connection.

On problem right now is that the same conf is used within neptune3 for the client as well as for the server side. This is fine on most platforms, but doesn't work on windows, as the server should run on 0.0.0.0, but the clients should use 127.0.0.1 to connect.