Update iologindata.h - account manager

Added:
changeName(uint32_t guid, std::string newName, std::string oldName);
createCharacter(uint32_t accountId, std::string characterName, int32_t vocationId, uint16_t sex);
setPassword(uint32_t accountId, std::string newPassword);
accountIdExists(uint32_t accountId);
accountNameExists(const std::string& name);
createAccount(std::string name, std::string password);
getAccountId(const std::string& name, uint32_t& number);