Change "Advanced Settings" to "Properties"

Remove some unneeded debugging output.
Replace gobject.timeout_add_seconds / gobject.timeout_add if/else logic with calls to a misc.timeout_add method that does it internally.
Only display the dbus lost error message if dbus has been gone for 5 seconds without coming back.

wicd/networking.py

@@ -254,7 +254,6 @@ class ConnectThread(threading.Thread):
     """
 
     is_connecting = None
-    connecting_thread = None
     should_die = False
     lock = thread.allocate_lock()