multiple payout page and small fixes

frontend/pweb/lib/pages/signup/confirmation/card/card.dart

@@ -7,7 +7,7 @@ import 'package:provider/provider.dart';
 import 'package:pshared/provider/account.dart';
 
 import 'package:pweb/utils/snackbar.dart';
-import 'package:pweb/widgets/error/snackbar.dart';
+import 'package:pweb/utils/error/snackbar.dart';
 import 'package:pweb/widgets/vspacer.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';

frontend/pweb/lib/pages/signup/form/content.dart

@@ -30,6 +30,7 @@ class SignUpFormContent extends StatelessWidget {
       constraints: BoxConstraints(maxWidth: maxWidth),
       child: Card(
         child: Column(
+          mainAxisSize: MainAxisSize.min,
           children: [
             Row(
               children: [

frontend/pweb/lib/pages/signup/form/state.dart

@@ -16,7 +16,7 @@ import 'package:pweb/pages/signup/form/content.dart';
 import 'package:pweb/pages/signup/form/controllers.dart';
 import 'package:pweb/pages/signup/form/form.dart';
 import 'package:pweb/pages/signup/confirmation/args.dart';
-import 'package:pweb/widgets/error/snackbar.dart';
+import 'package:pweb/utils/error/snackbar.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';
 

frontend/pweb/lib/pages/signup/page.dart

@@ -13,4 +13,4 @@ class SignUpPage extends StatelessWidget {
     appBar: const LoginAppBar(),
     child: SignUpForm(),
   );
-}
+}