Merge pull request #4632 from pangeachat/4586-userid---displayname

add display name to activity summary

lib/pangea/activity_sessions/activity_user_summaries_widget.dart

@@ -159,7 +159,11 @@ class ButtonControlledCarouselView extends StatelessWidget {
                     Flexible(
                       child: SingleChildScrollView(
                         child: Text(
-                          p.feedback,
+                          p.displayFeedback(
+                            user?.calcDisplayname() ??
+                                p.participantId.localpart ??
+                                p.participantId,
+                          ),
                           style: const TextStyle(fontSize: 12.0),
                         ),
                       ),

lib/pangea/activity_summary/activity_summary_response_model.dart

@@ -29,6 +29,9 @@ class ParticipantSummaryModel {
       'superlatives': superlatives,
     };
   }
+
+  String displayFeedback(String displayName) =>
+      feedback.replaceAll(participantId, displayName);
 }
 
 class ActivitySummaryResponseModel {