stored object: add has_title option to form type of StoredObject

src/Bundle/ChillActivityBundle/Form/ActivityType.php

@@ -313,6 +313,7 @@ class ActivityType extends AbstractType
                 'button_add_label' => 'activity.Insert a document',
                 'button_remove_label' => 'activity.Remove a document',
                 'empty_collection_explain' => 'No documents',
+                'entry_options' => ['has_title' => true],
             ]);
         }