Fix PHP notice on feed_items page

controllers/item.php

@@ -122,6 +122,7 @@ Router\get_action('feed-items', function() {
         'nb_unread_items' => Model\Item\count_by_status('unread'),
         'offset' => $offset,
         'items_per_page' => Model\Config\get('items_per_page'),
+        'item_title_link' => Model\Config\get('item_title_link'),
         'menu' => 'feed-items',
         'title' => '('.$nb_items.') '.$feed['title']
     )));

templates/feed_items.php

@@ -36,6 +36,7 @@
                 'display_mode' => $display_mode,
                 'favicons' => $favicons,
                 'original_marks_read' => $original_marks_read,
+                'item_title_link' => $item_title_link,
             )) ?>
         <?php endforeach ?>