- Make the GUI behave better when a disconnect button is pushed.

- Move some of the libnotify logic to guiutil.py and add support for displaying some error messages in a libnotify pop-up.
- Apply some patches provided by sunseraph.  Tweak to the channel regex and checking for a valid AP bssid when monitoring a wireless connection.  Set essid, bssid, and channel in separate calls to iwconfig.
- Add caching for ifconfig and iwconfig results in wnettools.py.  That way we're not needlessly calling the same command a bunch of times in a short period of time (2 seconds).  This removes the need for us to pass around iwconfig/ifconfig output elsewhere, though I've left it in for now.
- Remove unneeded BackendManager instance from networking.py
- Fix last used wired networking autoconnection method

wicd/misc.py

@@ -492,7 +492,7 @@ def stringToNone(text):
 def checkboxTextboxToggle(checkbox, textboxes):
     for textbox in textboxes:
         textbox.set_sensitive(checkbox.get_active())
-        
+
 def threaded(f):
     """ A decorator that will make any function run in a new thread. """