fix show empty values in timeline

Resources/config/services.yml

@@ -21,6 +21,8 @@ services:
             - '@doctrine.orm.entity_manager'
             - '@chill.main.security.authorization.helper'
             - '@security.token_storage'
+            - '@chill.custom_field.helper'
+            - '%chill_custom_fields.show_empty_values%'
         tags:
             - { name: chill.timeline, context: 'person' }