Use unicode icons instead of long texts in the tag thread counter

boards/templates/boards/all_threads.html

@@ -79,16 +79,16 b''
             <p>
                 {% with active_count=tag.get_active_thread_count bumplimit_count=tag.get_bumplimit_thread_count archived_count=tag.get_archived_thread_count %}
                     {% if active_count %}
-                        {% blocktrans count count=active_count %}{{ count }} active thread{% plural %}active threads{% endblocktrans %},
+                        ○ {{ active_count }}&ensp;
                     {% endif %}
                     {% if bumplimit_count %}
-                        {% blocktrans count count=bumplimit_count %}{{ count }} thread in bumplimit{% plural %} threads in bumplimit{% endblocktrans %},
+                        ◍ {{ bumplimit_count }}&ensp;
                     {% endif %}
                     {% if archived_count %}
-                        {% blocktrans count count=archived_count %}{{ count }} archived thread{% plural %}archived threads{% endblocktrans %},
+                        ● {{ archived_count }}&ensp;
                     {% endif %}
                 {% endwith %}
-                {% blocktrans count count=tag.get_post_count %}{{ count }} message{% plural %}messages{% endblocktrans %}.
+                ♥ {{ tag.get_post_count }}
             </p>
             {% if tag.get_all_parents %}
                 <p>