bug: fix replacement for param writer_name -> writer correctly. Use the html4css1 writer for now. If you use the html5_polyglot you end up with: <main> processed rst </main> rather than (html4css1 writer's): <div class="document"> processed rst </div> there can only be one <main> per document. Each message must not be inside a <main> tag. I could string munge the main tag to a div. But that's ugly. The correct way is to subclass html5_polyglot and override the HTMLTrnslator::documenttag_args replacing {'tagname': 'main'} with {'tagname': 'div', "CLASS": "document"} or something similar. That's a change for another time.

<!-- query.item -->
<span tal:condition="context/is_view_ok" tal:replace="structure
      context/renderQueryForm" />
<tal:block tal:condition="not:context/is_view_ok">
  <tal:block metal:use-macro="templates/page/macros/icing">
    <title metal:fill-slot="head_title">You can not view query</title>
    <tal:block metal:fill-slot="body_title">
      You can not view query.
    </tal:block>
    <td class="content" metal:fill-slot="content">
      You are not allowed to view <span tal:content="context/_classname"/>
      with id <span tal:content="context/id"/>
    </td>
  </tal:block>
</tal:block>