fixed button description to language string

Author: Benedikt Weber

administrator/components/com_content/View/Article/HtmlView.php

@@ -207,7 +207,7 @@ function (Toolbar $childBar) use ($checkedOut, $itemEditable, $canDo)
 				$modalId = 'jform_request_id';
 
 				// Add button to open the modal
-				ToolbarHelper::modal('ModalNewItem_' . $modalId, 'icon-new', 'New Menu Item');
+				ToolbarHelper::modal('ModalNewItem_' . $modalId, 'icon-new', 'COM_CONTENT_ADD_NEW_MENU_ITEM');
 
 				// Add the modal field script to the document head.
 				HTMLHelper::_('jquery.framework');

administrator/language/en-GB/en-GB.com_content.ini

@@ -4,6 +4,7 @@
 ; Note : All ini files need to be saved as UTF-8
 
 COM_CONTENT="Articles"
+COM_CONTENT_ADD_NEW_MENU_ITEM="New Menu Item"
 COM_CONTENT_ARTICLE_CONTENT="Content"
 COM_CONTENT_ARTICLES_TITLE="Articles"
 COM_CONTENT_ATTRIBS_ARTICLE_SETTINGS_LABEL="Options"