updated receive message

backend/app.py

@@ -187,7 +187,9 @@ def receive_messages():
     for message in messages:
         m = {
             "message": message["text"],
-            "fileList": [message["filename"]]
+            "fileList": [message["filename"]],
+            "sender": message["sender"],
+            "receiver": message["receiver"]
         }
         return_messages.append(m)
     context = {