Change ReactSpa template to something more like a dashboard with sidebar navigation

templates/ReactSpa/ClientApp/components/Layout.tsx

@@ -0,0 +1,21 @@
+import * as React from 'react';
+import { NavMenu } from './NavMenu';
+
+export interface LayoutProps {
+    body: React.ReactElement<any>;
+}
+
+export class Layout extends React.Component<LayoutProps, void> {
+    public render() {
+        return <div className="container-fluid"> 
+            <div className="row">
+                <div className="col-sm-3">
+                    <NavMenu />
+                </div>
+                <div className="col-sm-9">
+                    { this.props.body }
+                </div>
+            </div>
+        </div>;
+    }
+}