Act amending Act No. 29 / 2000 Coll., on Postal Services and amending certain laws (Act on Postal Services), as amended, and Act No. 319 / 2015 Coll., amending Act No. 29 / 2000 Coll., on Postal Services and amending certain laws (Act on Postal Services), as amended, and Act No. 77 / 1997 Coll., on State Enterprise, as amended