only allow comment author to edit comments

opentech/apply/activity/templates/activity/include/listing_base.html

@@ -7,12 +7,14 @@
         <div class="feed__meta js-feed-meta">
             <p class="feed__label feed__label--{{ activity.type }} feed__label--mobile">{{ activity.type|capfirst }}</p>
             <p class="feed__meta-item"><span>{{ activity|display_author:request.user }}</span> – {{ activity.timestamp|date:"Y-m-d H:i" }}</p>
-            <p class="feed__meta-item feed__meta-item--edit-button">
-                <a class="link link--edit-submission is-active js-edit-comment" href="#">
-                    Edit
-                    <svg class="icon icon--pen"><use xlink:href="#pen"></use></svg>
-                </a>
-            </p>
+            {% if activity.user == request.user %}
+                <p class="feed__meta-item feed__meta-item--edit-button">
+                    <a class="link link--edit-submission is-active js-edit-comment" href="#">
+                        Edit
+                        <svg class="icon icon--pen"><use xlink:href="#pen"></use></svg>
+                    </a>
+                </p>
+            {% endif %}
             {% if activity.edited %}
                 <p class="feed__meta-item feed__meta-item--last-edited">(Last edited: <span class="js-last-edited">{{ activity.edited|date:"Y-m-d H:i" }}</span>)</p>
             {% endif %}