Add some bootstrap 4 additions

Author: dweber019

src/app/app.vm.html

@@ -1,6 +1,6 @@
 <template>
 
-  <nav-bar router.bind="router"></nav-bar>
+  <nav-bar router.bind="router" containerless></nav-bar>
 
   <div class="page-host">
     <router-view swap-order="after"></router-view>

webpack.config.js

@@ -148,6 +148,7 @@ module.exports = ({ production, server, extractCss, coverage, platform, config }
         '$': 'jquery',
         'jQuery': 'jquery',
         'window.jQuery': 'jquery',
+        Popper: ['popper.js', 'default'] // Bootstrap 4 Dependency.
       }),
       new TsConfigPathsPlugin(),
       new CheckerPlugin(),