Release 19.01

1. Peer definition format in config files was changed:

   [gs_mavlink]
   peer = 'connect://127.0.0.1:14550'  # outgoing connection
   # peer = 'listen://0.0.0.0:14550'   # incoming connection
   
   [gs_video]
   peer = 'connect://127.0.0.1:5600'  # outgoing connection for
                                      # video sink (QGroundControl on GS)
   
   [drone_mavlink]
   peer = 'listen://0.0.0.0:14550'   # incoming connection
   # peer = 'connect://127.0.0.1:14550'  # outgoing connection
   
   [drone_video]
   peer = 'listen://0.0.0.0:5600'  # listen for video stream (gstreamer on drone)
   

2. Wifi card setup was moved to python code from shell script