code-cleanup: removed unused classes, added role constants, phpcs fixes (#96)

src/DependencyInjection/Configuration.php

@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Kimai package.
+ *
+ * (c) Kevin Papst <kevin@kevinpapst.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace App\DependencyInjection;
 
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
@@ -8,7 +17,7 @@ use Symfony\Component\Config\Definition\ConfigurationInterface;
 /**
  * This is the class that validates and merges configuration from your app/config files
  *
- * To learn more see {@link http://symfony.com/doc/current/cookbook/bundles/extension.html#cookbook-bundles-extension-config-class}
+ * @author Kevin Papst <kevin@kevinpapst.de>
  */
 class Configuration implements ConfigurationInterface
 {