Update iologindata.cpp - account manager

Added:
playerExists(uint32_t guid)
playerExists(std::string& name)
changeName(uint32_t guid, std::string newName, std::string oldName) //not in use yet
createCharacter(uint32_t accountId, std::string characterName, int32_t vocationId, uint16_t sex)
setPassword(uint32_t accountId, std::string newPassword)
createAccount(std::string name, std::string password)
getAccountId(const std::string& name, uint32_t& number)
accountNameExists(const std::string& name)