added RodzajPlatnosci enum
added Kolor enum
added Urlop model class, to be continued
added UstawieniaSprzedazy model class, to be continued
added CennikDostaw model class, to be continued
added SzczegolyDostawy model class, to be continued
added SposobDostawy model class, to be continued
added SzczegolyWykluczenia model class, to be continued
added SzczegolyObserwacji model class, to be continued
added Regulamin model class, to be continued
added Umowa model class, to be continued
added Oferta model class, to be continued
added ListAktywacyjny model class, to be continued
added KategoriaPowodu model class, to be continued
added PowodZgloszenia model class, to be continued
added WniosekOUniewaznienie model class, to be continued
added RodzajKomentarza enum
added Komentarz model class, to be continued
added Odpowiedz model class, to be continued
added GraficznaOcenaSprzedazy model class, to be continued