adapt UI and controller for Person without centers

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

@@ -0,0 +1,30 @@
+<?php
+
+namespace Chill\MainBundle\Security\Resolver;
+
+use Chill\MainBundle\Entity\Center;
+use Chill\MainBundle\Entity\HasCenterInterface;
+
+class DefaultCenterResolver implements CenterResolverInterface
+{
+    public function supports($entity, ?array $options = []): bool
+    {
+        return $entity instanceof HasCenterInterface;
+    }
+
+    /**
+     * @inheritDoc
+     *
+     * @param HasCenterInterface $entity
+     * @param array $options
+     */
+    public function resolveCenter($entity, ?array $options = [])
+    {
+        return $entity->getCenter();
+    }
+
+    public static function getDefaultPriority(): int
+    {
+        return -256;
+    }
+}