Added support for monitoring connection status without the need for iwconfig, ifconfig, and ethtool/miitool.

Added a "Disconnect" button to each network entry, which will be visible instead of the "Connect" button for the active network.
Fixed a bug where cancelling a connection while validating authentication would leave the GUI in the connecting state forever.

misc.py

@@ -277,4 +277,5 @@ def error(parent, message):
                                gtk.BUTTONS_OK)
     dialog.set_markup(message)
     dialog.run()
-    dialog.destroy()
+    dialog.destroy()
+