- 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