Fixed Ad-hoc icon mixup on the frame

* Non-Sugar Ad-hoc networks are shown like access points
* Fixes ticket 3006: https://bugs.sugarlabs.org/ticket/3006
* This is a GCI 2015 task: https://codein.withgoogle.com/tasks/6255669527183360/

extensions/deviceicon/network.py

@@ -536,7 +536,7 @@ def _update_state(self):
         else:
             state = network.NM_DEVICE_STATE_UNKNOWN
 
-        if self._mode != network.NM_802_11_MODE_ADHOC and \
+        if self._mode != network.NM_802_11_MODE_ADHOC or \
                 network.is_sugar_adhoc_network(self._ssid) is False:
             if state == network.NM_DEVICE_STATE_ACTIVATED:
                 icon_name = '%s-connected' % 'network-wireless'