title: django TemplateSyntaxError Invalid block tag: 'trans'
body: <p>After running the <code>runserver</code> command I get the following error:</p>
  
  <blockquote>
    <p><strong>TemplateSyntaxError at /questions/ Invalid block tag: 'trans'</strong></p>
  </blockquote>
  
  <p>Does anybody know that what's the reason?</p>
  
  <p>This is my template syntax: </p>
  
  <pre><code>     {% extends "two_column_body.html" %}
  {# 
      this template is split into several
      blocks that are included here
      the blocks are within directory templates/main_page
      relative to the skin directory
  
      there is no html markup in this file
  #}
  &lt;!-- questions.html --&gt;
  {% block forejs %}
      {% include "main_page/custom_head_javascript.html" %}
  {% endblock %}
  {% block title %}{% spaceless %}{% trans %}Questions{% endtrans %}{% endspaceless %}{% endblock %}
  {% block content %}
      {% include "main_page/tab_bar.html" %}
      {% include "main_page/headline.html" %}
      {# ==== BEGIN: main_page/content.html === #}
      &lt;div id="question-list"&gt;
          {% include "main_page/questions_loop.html" %}
      &lt;/div&gt;
      {# ==== END: main_page/content.html === #}
      {% include "main_page/paginator.html" %}
  {% endblock %}
  {% block sidebar %}
      {% include "main_page/sidebar.html" %}
  {% endblock %}
  {% block endjs %}
      &lt;script type="text/javascript"&gt;
          {# cant cache this #}
          askbot['settings']['showSortByRelevance'] = {{ show_sort_by_relevance|as_js_bool }};
          askbot['messages']['questionSingular'] = '{{ settings.WORDS_QUESTION_SINGULAR|escapejs }}';
          askbot['messages']['answerSingular'] = '{{ settings.WORDS_ANSWER_SINGULAR|escapejs }}';
          askbot['messages']['acceptOwnAnswer'] = '{{ settings.WORDS_ACCEPT_OR_UNACCEPT_OWN_ANSWER|escapejs }}';
          askbot['messages']['followQuestions'] = '{{ settings.WORDS_FOLLOW_QUESTIONS|escapejs }}';
      &lt;/script&gt;
      {% include "main_page/javascript.html" %}
      {% include "main_page/custom_javascript.html" %}
  {% endblock %}
  &lt;!-- end questions.html --&gt;
  </code></pre>