Change the last_edit fate to use the live_revision which is correct

opentech/apply/funds/models/submissions.py

@@ -324,12 +324,6 @@ class ApplicationSubmission(
     def active(self):
         return self.status in active_statuses
 
-    @property
-    def last_edit(self):
-        # Best estimate of last edit
-        # TODO update when we have revisioning included
-        return self.activities.first()
-
     def ensure_user_has_account(self):
         if self.user and self.user.is_authenticated:
             self.form_data['email'] = self.user.email

opentech/apply/funds/templates/funds/applicationsubmission_detail.html

@@ -58,7 +58,7 @@
                 <div>
                     <h6 class="heading heading--submission-meta">
                         <span>Submitted: <strong>{{ object.submit_time.date }} by {{ object.user.get_full_name }}</strong></span>
-                        <span>Last edited: <strong>{{ object.last_edit.timestamp.date }} by {{ object.last_edit.user.get_full_name }}</strong></span>
+                        <span>Last edited: <strong>{{ object.live_revision.timestamp.date }} by {{ object.live_revision.author }}</strong></span>
                         {% if request.user|has_edit_perm:object %}
                             <a class="link link--edit-submission is-active" href="{% url 'funds:submissions:edit' object.id %}">
                                 Edit