Release 1.3 - new login methods

- [SERVER] added admin login command (/aplogin by default)
- [SERVER] added autologin via LUID
- [SERVER] new variables in server.nut: (str)LOGIN_COMMAND,
(str)ADMIN_PASSWORD, (int)ADMIN_LEVEL, (int)ADMIN_LOGIN_ATTEMPTS,
(bool)LUID_AUTOLOGIN