Revert "Promote phutil-tag again"

This reverts commit 8fbabdc06d, reversing
changes made to 2dab1c1e42.

src/applications/oauthserver/controller/PhabricatorOAuthServerAuthController.php

@@ -143,7 +143,8 @@ extends PhabricatorAuthController {
 
     // display time -- make a nice form for the user to grant the client
     // access to the granularity specified by $scope
-    $title = 'Authorize '.$client->getName().'?';
+    $name  = phutil_escape_html($client->getName());
+    $title = 'Authorize ' . $name . '?';
     $panel = new AphrontPanelView();
     $panel->setWidth(AphrontPanelView::WIDTH_FORM);
     $panel->setHeader($title);