move push notification setup out of an App.vue Notification and into a component

src/components/ContactNameDialog.vue

@@ -49,7 +49,7 @@ export default class ContactNameDialog extends Vue {
   async open(
     title?: string,
     message?: string,
-    saveCallback?: (name: string) => void,
+    saveCallback?: (name?: string) => void,
     cancelCallback?: () => void,
   ) {
     this.cancelCallback = cancelCallback || this.cancelCallback;