adapt UI and controller for Person without centers

src/Bundle/ChillMainBundle/Security/Resolver/CenterResolverInterface.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Chill\MainBundle\Security\Resolver;
+
+use Chill\MainBundle\Entity\Center;
+
+interface CenterResolverInterface
+{
+    public function supports($entity, ?array $options = []): bool;
+
+    /**
+     * @param $entity
+     * @param array|null $options
+     * @return Center|array|Center[]
+     */
+    public function resolveCenter($entity, ?array $options = []);
+
+    public static function getDefaultPriority(): int;
+}