anchor.diff:          <h2>POPULAR WARNINGS</h2>
           <ul>
           <% warnings.group_by {|w| w.message_id}.sort_by {|m,w| w.length}.reverse.each do |message_id, warnings| %>
  -          <li>
  -            warning <a href="http://validator.w3.org/docs/errors.html#ve-<%= message_id %>"><%= message_id %></a>
  -            found <%= warnings.length %> times
  -          </li>
  +          <% if message_id == 'html5' %>
  +            <li><%= warnings.length %> HTML5 warnings found</li>
  +          <% elsif message_id %>
  +            <li>warning <a href="http://validator.w3.org/docs/errors.html#ve-<%= message_id %>"><%= message_id %></a>
  +            found <%= warnings.length %> times</li>
  +          <% end %>
           <% end %>
           </ul>
         <% end %>
  
positive.code:             <ul class="page_errors">
              <% page.errors.each do |error| %>
                <li>
                  Error <a href="http://validator.w3.org/docs/errors.html#ve-<%= error.message_id %>"><%= error.message_id %></a>
                  on line <%= error.line %>:
                  <%= error.text %>
                </li>
              <% end %>
  
negative.code:         <h2>POPULAR ERRORS</h2>
          <ul>
          <% errors.group_by {|e| e.message_id}.sort_by {|m,e| e.length}.reverse.each do |message_id, errors| %>
            <% if message_id == 'html5' %>
              <li><%= errors.length %> HTML5 errors found</li>
            <% elsif message_id %>
              <li>error <a href="http://validator.w3.org/docs/errors.html#ve-<%= message_id %>"><%= message_id %></a>
              happens <%= errors.length %> times</li>
            <% end %>
          <% end %>
          </ul>
        <% end %>
  