Fix device sometimes showing up twice on the list if coming back from the device page while releasing the device. Caused by websocket telling us about the release before we got the device data.

res/app/components/stf/device/device-service.js

@@ -145,9 +145,7 @@ module.exports = function DeviceServiceFactory($http, socket, EnhanceDeviceServi
     scopedSocket.on('device.change', changeListener)
 
     this.add = function(device) {
-      remove(device)
-      insert(device)
-      notify({
+      addListener({
         important: true
       , data: device
       })