allow to load person interactively

- return results as json in PersonSearch
- update PickPersonType to load peoples with ChoiceLoader

Resources/config/services.yml

@@ -65,6 +65,8 @@ services:
             - "@chill.person.repository.person"
             - "@security.token_storage"
             - "@chill.main.security.authorization.helper"
+            - '@Symfony\Component\Routing\Generator\UrlGeneratorInterface'
+            - '@Symfony\Component\Translation\TranslatorInterface'
         tags:
             - { name: form.type }