reorganize and cleanup php server code

server/app/Http/Middleware/TwoFactorEnabled.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Vanguard\Http\Middleware;
+
+use Closure;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+class TwoFactorEnabled
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        if (! setting('2fa.enabled')) {
+            throw new NotFoundHttpException;
+        }
+
+        return $next($request);
+    }
+}