Initial version of transactions. Shell command implemented as an example. Still needs channel cleanup on app side, handling a device dying in the middle of a transaction, and getting device list back to normal.

res/app/components/stf/screen/screen-controller.js

@@ -5,7 +5,7 @@ module.exports = function DeviceScreenCtrl($scope, ScalingService) {
   $scope.showScreen = true
   $scope.ScalingService = ScalingService
 
-  $scope.promiseOfDevice.then(function () {
+  $scope.device.promise.then(function() {
     $scope.ready = true
   })
 }