Show AK start and end, not just start

AKModel/models.py

@@ -345,6 +345,15 @@ class AKSlot(models.Model):
             return _("Not scheduled yet")
         return self.start.astimezone(self.event.timezone).strftime('%a %H:%M')
 
+    @property
+    def time_simplified(self):
+        """
+        Display start and end time of slot in format weekday + time, e.g. "Fri 14:00 - 15:30"
+        """
+        if self.start is None:
+            return _("Not scheduled yet")
+        return self.start.astimezone(self.event.timezone).strftime('%a %H:%M') + ' - ' + self.end.astimezone(self.event.timezone).strftime('%H:%M')
+
     @property
     def end(self):
         """

AKSubmission/templates/AKSubmission/ak_detail.html

@@ -187,7 +187,7 @@
             <tr>
                 <td>{{ slot.duration }}</td>
                 {% if not ak.event.plan_hidden or user.is_staff %}
-                    <td>{{ slot.start_simplified }}</td>
+                    <td>{{ slot.time_simplified }}</td>
                     <td>
                         {% if "AKPlan"|check_app_installed and slot.room %}
                             <a href="{% url 'plan:plan_room' event_slug=ak.event.slug pk=slot.room.pk %}">{{ slot.room }}</a>