Update devices collection

src/device_manager/model/Devices.js

@@ -1,15 +1,15 @@
-import Backbone from 'backbone';
+import { Collection } from 'backbone';
 import Device from './Device';
 
-export default Backbone.Collection.extend({
-  model: Device,
-
-  comparator: (left, right) => {
+export default class Devices extends Collection {
+  comparator(left, right) {
     const max = Number.MAX_VALUE;
     return (right.get('priority') || max) - (left.get('priority') || max);
-  },
+  }
 
   getSorted() {
     return this.sort();
   }
-});
+}
+
+Devices.prototype.model = Device;