redesigned payment page + a lot of fixes

frontend/pweb/lib/models/dashboard/summary_values.dart

@@ -0,0 +1,11 @@
+class PaymentSummaryValues {
+  final String fee;
+  final String recipientReceives;
+  final String total;
+
+  const PaymentSummaryValues({
+    required this.fee,
+    required this.recipientReceives,
+    required this.total,
+  });
+}