title: Simple check if form field has errors in Twig template
body: <p>In Twig template I check if a field has an error like this:</p>
  
  <pre><code>{% if form.points.get('errors') is not empty %}
  </code></pre>
  
  <p>Is there any method like:</p>
  
  <pre><code>{% if form.points.hasErrors() %}
  </code></pre>
  
  <p>to do it simpler? It's not a big difference, but if I can't do it easier why not.</p>