Finish first round of User/Node API additions

Will still need some tweaking and improvements to allow everything to be used.

app/Exceptions/Service/HasActiveServersException.php

@@ -1,16 +1,17 @@
 <?php
-/**
- * Pterodactyl - Panel
- * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
- *
- * This software is licensed under the terms of the MIT license.
- * https://opensource.org/licenses/MIT
- */
 
 namespace Pterodactyl\Exceptions\Service;
 
+use Illuminate\Http\Response;
 use Pterodactyl\Exceptions\DisplayException;
 
 class HasActiveServersException extends DisplayException
 {
+    /**
+     * @return int
+     */
+    public function getStatusCode()
+    {
+        return Response::HTTP_BAD_REQUEST;
+    }
 }