title: ASP.NET MVC Validationsummary with excludePropertyErrors = true renders empty if the model is invalid
body: <p>Say you have a standard ValidationSummary:</p>
  
  <pre><code>&lt;%: Html.ValidationSummary(excludePropertyErrors: true) %&gt;
  </code></pre>
  
  <p>If the ModelState contains model errors for properties but not for the model itself the ValidationSummary renders the following HTML:</p>
  
  <pre><code>&lt;div class="validation-summary-errors"&gt;&lt;ul&gt;&lt;li style="display:none"&gt;&lt;/li&gt;&lt;/ul&gt;&lt;/div&gt;
  </code></pre>
  
  <p>Which is displayed as an empty list but is still visible because of the red border around the list. This seems to be a bug to me. Can I turn off that the ValidationSummary helper will ever render an empty list?</p>