WIP: apply bootstrap theme

lib/views/layout/layout.html

@@ -175,7 +175,9 @@ gh/highlightjs/cdn-release@9.12.0/build/languages/yaml.min.js
   <!-- Left navbar-header -->
   <div class="navbar-default sidebar" role="navigation">
     <div class="sidebar-nav navbar-collapse slimscrollsidebar">
-      <ul class="nav" id="side-menu"></ul>
+      <ul class="nav" id="side-menu">
+        <li><a href="#">(TBD) Create /Sidebar</a></li>
+      </ul>
     </div>
   </div>
   <!-- Left navbar-header end -->