message: Small regex fix
  Old regex had some problems (a bit too restrictive). If you want, you can push this to loosen up the restrictions a little.
diff: @@ -398,8 +398,8 @@ bool CNLoginServer::exitDuplicate(int accountId)
  }
  bool CNLoginServer::isLoginDataGood(std::string login, std::string password)
  {
  - std::regex loginRegex("^([A-Za-z\\d_\\-]){5,20}$");
  - std::regex passwordRegex("^([A-Za-z\\d_\\-@$!%*#?&,.+:;<=>]){8,20}$");
  + std::regex loginRegex("^(?=.*[A-Za-z0-9]$)[A-Za-z][A-Za-z\d.-]{3,20}$");
  + std::regex passwordRegex("^(?=.*[A-Za-z0-9]$)[A-Za-z][A-Za-z\d.-]{3,20}$");
  return (std::regex_match(login, loginRegex) && std::regex_match(password, passwordRegex));
  }
  bool CNLoginServer::isPasswordCorrect(std::string actualPassword, std::string tryPassword)
  