@rodolfo:
My biggest thanks to you! I had read this in the thread before but adding the right and commenting out the wrong module in this file was not enough to configure the network via wicd in my case (wicd's error notification: bad password).
Thanks to your comment #22 I did the configuration myself and it worked immediately!
I've written a short tutorial in the German Orange Pi Forum, I hope that's ok for you (credits to this thread are in there, of course!).
Have a nice weekend!