The file-tools-network checkbutton is not working

[wb8tyw]

This button appears to be mislabeled as it is actually for launching a D-Rats repeater instance in the background.

Internally it is known as MainWindow.do_proxy.

It is currently failing because it can not find the d-rats repeater, using the default configuration.

It also should using the GTK method for launching or connecting for the application.

There needs to be checks to see if the application can run or is already running.