Bring checklist indicator back

dashboard/src/models/AppsModel.js

@@ -70,6 +70,11 @@ function appProgressMessage(app) {
   return app.message || (app.error ? app.error.message : '');
 }
 
+function pendingChecklistItems(app) {
+  if (!app.checklist) return 0;
+  return Object.keys(app.checklist).filter(function (key) { return !app.checklist[key].acknowledged; }).length;
+}
+
 function create() {
   const accessToken = localStorage.token;
 
@@ -458,4 +463,5 @@ export default {
   installationStateLabel,
   installationActive,
   appProgressMessage,
+  pendingChecklistItems,
 };