element-form: info about user profile available in the dom

src/Controller/ElementFormController.php

@@ -336,6 +336,7 @@ class ElementFormController extends GoGoController
                         'config' => $configService->getConfig(),
                         'imagesMaxFilesize' => $this->detectMaxUploadFileSize('images'),
                         'filesMaxFilesize' => $this->detectMaxUploadFileSize('files'),
+                        'isOwner' => $isUserOwnerOfValidElement
                     ]);
     }
 

templates/element-form/form.html.twig

 {{ form_start(form, {'id': 'formElement'}) }}
 
-<div id="element-form-content">
+<div id="element-form-content" class="{{ editMode ? 'edit' : 'new' }} {{ isOwner ? 'by-owner' : ''}} {{ isAllowedDirectModeration ? 'by-admin' : '' }}">
 	<section>
 		{% include "element-form/form-renderer.html.twig" %}
 	</section>