Use safe instead of turning off autoescape in base template

boards/templates/boards/base.html

@@ -31,10 +31,8 b''
     <header class="navigation_panel">
         <a class="link" href="{% url 'index' %}">{% trans "All threads" %}</a>
         {% if tags_str %}
-        <a href="{% url 'index' %}?filter=fav_tags" title="{% trans "interesting" %}">★</a>,
-            {% autoescape off %}
-                {{ tags_str }},
-            {% endautoescape %}
+            <a href="{% url 'index' %}?filter=fav_tags" title="{% trans "interesting" %}">★</a>,
+            {{ tags_str|safe }},
         {% else %}
             {% trans 'Add tags' %} → 
         {% endif %}