test use sections

app/UI/Client/Setting/Sections/GeneralSection.php

@@ -9,6 +9,7 @@ use ThurData\Servers\KerioEmail\Core\UI\Widget\Forms\Sections\InputGroup;
 use ThurData\Servers\KerioEmail\Core\UI\Widget\Forms\Fields\InputGroupElements;
 use ThurData\Servers\KerioEmail\Core\UI\Widget\Forms\Fields\Hidden;
 use function ThurData\Servers\KerioEmail\Core\Helper\di;
+use ThurData\Servers\KerioEmail\Core\UI\Widget\Forms\Validators\Decimal;
 
 /**
  *