Star icon for "interesting" thread feed

boards/templates/boards/base.html

@@ -31,7 +31,7 b''
     <div class="navigation_panel header">
         <a class="link" href="{% url 'index' %}">{% trans "All threads" %}</a>
         {% if tags_str %}
-            <a href="{% url 'index' %}?filter=fav_tags">{% trans "interesting" %}</a>,
+        <a href="{% url 'index' %}?filter=fav_tags" title="{% trans "interesting" %}">★</a>,
             {% autoescape off %}
                 {{ tags_str }},
             {% endautoescape %}