Add manual auto-update fallback

app/src/actions/UpdateNotifier.ts

@@ -0,0 +1,15 @@
+import { ActionTypes, CustomAction } from '../reducers'
+
+export const showUpdateNotification = (show: boolean): CustomAction => {
+  return {
+    type: ActionTypes.showUpdateNotification,
+    showUpdateNotification: show,
+  }
+}
+
+export const showUpdateDetails = (show: boolean): CustomAction => {
+  return {
+    type: ActionTypes.showUpdateDetails,
+    showUpdateDetails: show,
+  }
+}