In all the app templates, load and execute the Bootstrap JS code

templates/Angular2Spa/ClientApp/boot-client.ts

@@ -1,4 +1,5 @@
 import 'angular2/bundles/angular2-polyfills.js';
+import 'bootstrap';
 import './styles/site.css';
 
 import { bootstrap } from 'angular2/platform/browser';

templates/ReactSpa/ClientApp/boot.tsx

@@ -1,3 +1,4 @@
+import 'bootstrap';
 import 'bootstrap/dist/css/bootstrap.css';
 import './css/site.css';
 

templates/WebApplicationBasic/ClientApp/App.ts

@@ -1,4 +1,4 @@
-import 'bootstrap/dist/css/bootstrap.css';
+import 'bootstrap';
 import './css/site.css';
 
 // Replace with your TypeScript code