Added missing configuration files for NetProxy;
netproxy.cfg updated to support the DefaultMocketsConfigFile option
Added support for multiple IP addresses to which to send statistics;
updated GUI update messages to also have a field right after the message header to store the IP address of the external network interface of the machine sending the statistics;
added support for specifying a default Mockets configuration file from which to load the parameter settings if no specific file was set for connections to the remote NetProxy;
application startup significantly simplified;
fixed a bug that would try to delete instances of a Mutex twice on application exit;
fixed code style;