{% load i18n %}
<div class="panel panel-default">
  <div class="panel-heading">
    {% trans "Send a message" %}
  </div>
  <div class="panel-body">
    <form action="{{ form_url }}" method="post" role="form">
      {% csrf_token %}
      <div class="form-group">
        <textarea class="form-control" name="content" rows="6" required></textarea>
      </div>
      <button type="submit" class="btn btn-success"><span class="glyphicon glyphicon-envelope"></span> {% trans "Send" %}</button>
    </form>
  </div>
</div>