Notification of authentication.

I dont't know if you're interested, but since the captive portal i use is not detected by android (the wifi icon remains grayed even after Wifi Afterconnect has done its work), i prefer to see a notification when Wifi Afterconnect works... and has finished its authentication. So i propose the following patch to enable notification. Note that these notification can be enabled/disabled in the preference pane.
Feel free to enhance, modify or reject this contribution.