code styles: header_comment and ordered_imports (#175)

src/Entity/User.php

@@ -1,14 +1,21 @@
 <?php
 
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace App\Entity;
 
 use App\Validator\Constraints as KimaiAssert;
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Validator\Constraints as Assert;
-use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 
 /**
  * Application main User entity.