public static final Map<String, List<Integer>> MAPA_OVLASTI = Stream.of(
            new SimpleEntry<>("registracija", ADMIN_UNREG) ,
            new SimpleEntry<>("glasovanje", ADMIN_USER),
            new SimpleEntry<>("message", ALL),
            new SimpleEntry<>("statistika", ADMIN_USER),
            new SimpleEntry<>("upit_nadzorniku", USER),
            new SimpleEntry<>("uredi", USER),
            new SimpleEntry<>("manage_users", ADMIN),
            new SimpleEntry<>("dodaj_vijest", ADMIN),
			new SimpleEntry<>("postavi_nadzornika", ADMIN),
			new SimpleEntry<>("ukloni_nadzornika", ADMIN),
			new SimpleEntry<>("dodaj_glasovanje", ADMIN),
			new SimpleEntry<>("uredi_korisnika", ADMIN))
            .collect(Collectors.toMap(SimpleEntry::getKey, SimpleEntry::getValue));