Merge renderSingleView() and renderHTMLView()

Summary: They are same because render() returns safe HTML and raw strings are automatically escaped.

Test Plan: None.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4909

src/view/layout/PhabricatorObjectItemView.php

@@ -166,7 +166,7 @@ final class PhabricatorObjectItemView extends AphrontView {
       array(
         'class' => 'phabricator-object-item-content',
       ),
-      $this->renderHTMLView(
+      $this->renderSingleView(
         array(
           $header,
           $attrs,