add DBQUERY and DBRESULT messages to Message class and message handlers to NetClient and NetServer
refactored Message.CONNECTED to Message.CONNECT, Message.DISCONNECTED to Message.DISCONNECT;refactored NetServer.send() to NetServer.sendAll() for broadcast messages and NetServer.sendClient() for client specific messages.  Adapted relevant section of code to implement this;added sendClient() functionality to allow for sending to a Connection object or a Role
Merge pull request #24 from ojourmel/network

add DBQUERY and DBRESULT messages to Message class and message handlers ...