update changelog and csfixes

src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ConfidentialCourseMustHaveReferrerValidator.php

@@ -1,5 +1,14 @@
 <?php
 
+/**
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
 namespace Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod;
 
 use Chill\PersonBundle\Entity\AccompanyingPeriod;