Added additional username check in form files.

Till Brehm

2014-08-13 3ee67a99739154fa5fab3a041edabc14415d4e70

 interface/web/sites/lib/lang/en_web_domain.lng

@@ -127,4 +127,5 @@
$wb['backup_excludes_note_txt'] = '(Separate multiple directories with commas. Example: web/cache/*,web/backup)';
$wb['backup_excludes_error_regex'] = 'The excluded directories contain invalid characters.';
$wb['invalid_custom_php_ini_settings_txt'] = 'Invalid php.ini settings';
$wb['invalid_system_user_or_group_txt'] = 'Invalid system user or group';
?>