Merge branch 'MAGETWO-99954' of https://github.com/magento-chaika/magento2ce into pr_2019_06_11_ce

Author: vkolesny

app/code/Magento/Catalog/view/adminhtml/templates/catalog/category/tree.phtml

@@ -20,7 +20,7 @@
             <a href="#"
                onclick="tree.collapseTree(); return false;"><?= $block->escapeHtml(__('Collapse All')) ?></a>
             <span class="separator">|</span> <a href="#"
-                                                onclick="tree.expandTree(); return false;"><?= $block->escapeHtml(_('Expand All')) ?></a>
+                                                onclick="tree.expandTree(); return false;"><?= $block->escapeHtml(__('Expand All')) ?></a>
         <?php endif; ?>
     </div>
     <?php if ($block->getRoot()) :?>