Write to the right device after changes in Uranium API

resources/qml/Cura.qml

@@ -55,11 +55,11 @@ UM.MainWindow {
                     title: "Save All"
 
                     Instantiator {
-                        model: UM.OutputDevicesModel { }
+                        model: UM.OutputDevicesModel { id: devicesModel; }
 
                         MenuItem {
                             text: model.description
-                            onTriggered: model.requestWriteToCurrentDevice();
+                            onTriggered: devicesModel.requestWriteToDevice(model.id);
                         }
                         onObjectAdded: saveAllMenu.insertItem(index, object)
                         onObjectRemoved: saveAllMenu.removeItem(object)

resources/qml/SaveButton.qml

@@ -126,7 +126,7 @@ Rectangle {
                 }
                 label: Item { }
             }
-            onClicked: devicesModel.requestWriteToCurrentDevice()
+            onClicked: devicesModel.requestWriteToDevice(devicesModel.currentDevice.id)
         }
 
         Button {