ui improvements for trips and landmarks

frontend/lib/utils/fetch_trip.dart

@@ -57,6 +57,13 @@ fetchTrip(
   // only fill in the trip "meta" data for now
   trip.loadFromJson(json);
 
+
+  // now fill the trip with landmarks
+  // if (trip.landmarks.isNotEmpty) {
+  //   trip.landmarks.clear();
+  // }
+  // we are going to recreate all the landmarks from the information given by the api
+  trip.landmarks.remove(trip.landmarks.first);
   String? nextUUID = json["first_landmark_uuid"];
   while (nextUUID != null) {
     var (landmark, newUUID) = await fetchLandmark(nextUUID);