redesigned payment page + a lot of fixes

frontend/pweb/lib/pages/report/operations/states/loading.dart

@@ -0,0 +1,11 @@
+import 'package:flutter/material.dart';
+
+
+class OperationHistoryLoading extends StatelessWidget {
+  const OperationHistoryLoading({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Center(child: CircularProgressIndicator());
+  }
+}