LIL-33. Don't show deactivated comments.

apps/course/templates/course/blocks/comment.html

@@ -1,5 +1,5 @@
 {% load static %}
-
+{% if not node.deactivated_at %}
 <div id="question__{{ node.id }}" class="questions__item {% if node.is_child_node %}questions__item_reply{% endif %}">
   {% if node.author.photo %}
   <div class="questions__ava ava">
@@ -24,4 +24,5 @@
       {% endif %}
     </div>
   </div>
-</div>
+</div>
+{% endif %}