multiple payout page and small fixes

frontend/pshared/lib/api/responses/login_pending.dart

@@ -10,12 +10,13 @@ part 'login_pending.g.dart';
 class PendingLoginResponse {
   final AccountResponse account;
   final TokenData pendingToken;
-  final String destination;
+  @JsonKey(name: 'destination')
+  final String target;
 
   const PendingLoginResponse({
     required this.account,
     required this.pendingToken,
-    required this.destination,
+    required this.target,
   });
 
   factory PendingLoginResponse.fromJson(Map<String, dynamic> json) => _$PendingLoginResponseFromJson(json);

frontend/pshared/lib/api/responses/payment/payments.dart

@@ -9,6 +9,7 @@ part 'payments.g.dart';
 
 @JsonSerializable(explicitToJson: true)
 class PaymentsResponse extends CursorPageResponse {
+  @JsonKey(defaultValue: <PaymentDTO>[])
   final List<PaymentDTO> payments;
 
   const PaymentsResponse({