Session and Logger

Pull request had Logger and Writer that write logs in file, but don't have request in code that summon him.
Session - then you go in main page "site.com" if your session have $_SESSION['logInStatus'] = 1 you will see your account page else you will see LogIn page.
`empty` has the same issues as `isset` - it'll return false if we HAVE such elemant but it's value is null