Improved the test for GroupNet server and clients.
Added a load test and cleaned up the client to client test
Implemented a sendRawMsg(byte[]) method in StreamCon.

Added support for the new method in the groupNet.server package.
Rewrote the netObject package and added documentation.
Renamed a few classes.
Renamed Connection.java to AbstractConnection.java
Renamed ConnectionI.java to Connection.java
Renamed HubI.java to Hub.java