Fixes for arduino dangerboard joystick app

sw/ground_segment/python/joystick/arduino_dangerboard.py

@@ -61,7 +61,7 @@ class arduino_dangerboard():
 
 def main():
   try:
-    foo = dangerboard()
+    foo = arduino_dangerboard()
     foo.poll()
   except KeyboardInterrupt:
     pass

sw/ground_segment/python/joystick/ivydanger.py

@@ -76,7 +76,7 @@ def GetOptions():
       Usage(sys.argv[0])
       sys.exit()
     elif o in ("-a", "--ac_id"):
-      options['ac_id'].append(int(a))
+      options['ac_id'] = [ int(a) ]
     elif o in ("-s", "--sliders"):
       options['sliders'] = a.split(':')