title: django and bootstrap 3 error with 'bootstrap_form_buttons', expected 'endblock'
body: <p>Im currently working on a project and I want to make a nice looking login screen with django and bootstrap 3.</p>
  
  <p>Atm I have this code:</p>
  
  <pre><code>{% extends "base.html" %}
  {% load bootstrap3 %}
  {% block content %}
  
  &lt;div class="row"&gt;&lt;div class="col-md-4"&gt;
  {% if form.errors %}
  &lt;p&gt;Your username and password didn't match. Please try again.&lt;/p&gt;
  {% endif %}
  
  &lt;form role="form" method="post" action=""&gt;
     {% csrf_token %}
  &lt;div class="form-group"&gt;
     {% bootstrap_field form.username %}
  &lt;/div&gt;
  &lt;div class="form-group"&gt;
     {% bootstrap_field form.password %}
  &lt;/div&gt;
  &lt;input type="hidden" name="next" value="{{ next }}" /&gt;
     {% bootstrap_form_buttons %}
        &lt;button type="submit" class="btn btn-primary"&gt;Login&lt;/button&gt;
     {% end_bootstrap_form_buttons %}
  &lt;/form&gt;
  &lt;/div&gt;&lt;/div&gt;
  {% endblock %}
  </code></pre>
  
  <p>Which results in the following error: 
  <strong>Invalid block tag on line 20: 'bootstrap_form_buttons', expected 'endblock'. Did you forget to register or load this tag?</strong></p>
  
  <p>According to me I have bootstrap3 loaded and I have looked on google but can't seem to find the problem. Please help.</p>