Merge branch '1.0.x' into 3154765_translations_support

# Conflicts:
#	src/Plugin/Field/FieldWidget/LayoutParagraphsWidget.php

src/Plugin/Field/FieldWidget/LayoutParagraphsWidget.php

@@ -652,13 +652,21 @@ class LayoutParagraphsWidget extends WidgetBase implements ContainerFactoryPlugi
     }
     else {
       // Add the #isTranslating attribute, if in a translation context.
+      $elements['is_translating_warning'] = [
+        '#type' => "html_tag",
+        '#tag' => 'div',
+        '#value' => t("This is Translation Context (editing a version not in the original language). <b>No new Layout Sections and Paragraphs can be added</b>."),
+        '#weight' => -1100,
+        '#attributes' => [
+          'class' => ['is_translating_warning'],
+        ],
+      ];
       $elements['add_more'] = [
         'actions' => [
           '#isTranslating' => TRUE,
         ],
       ];
     }
-
     if ($widget_state['open_form'] !== FALSE) {
       $this->entityForm($elements, $form_state, $form);
     }
@@ -2062,6 +2070,14 @@ class LayoutParagraphsWidget extends WidgetBase implements ContainerFactoryPlugi
 
   /**
    * Field instance settings form.
+   *
+   * @param array $form
+   *   The Form element.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   *
+   * @return array
+   *   The Form array.
    */
   public function settingsForm(array $form, FormStateInterface $form_state) {
     $entity_type_id = $this->getFieldSetting('target_type');
@@ -2141,6 +2157,9 @@ class LayoutParagraphsWidget extends WidgetBase implements ContainerFactoryPlugi
 
   /**
    * Default settings for widget.
+   *
+   * @return array
+   *   The default settings array.
    */
   public static function defaultSettings() {
     $defaults = parent::defaultSettings();