Improve Ukrainian support and minor fixes in CZ, KZ, LT, LV, PL, RU, SR languages (#400)

* Fix English char 'i' in Ukrainian words

* Fix the feminine currency processing for UAH in lang_UK.py

* Fix test_ua.py

* Fix the feminine currency processing for UAH in lang_RU.py

* Add tests for UAH in test_ru.py

* Add world currencies to lang_UK.py; Add test cases to test_uk.py for world currencies

* Fix incorrect handling of zeros after decimal point for CZ, KZ, LT, LV, PL, RU, SR and UK languages

* Add ukrainian ordinal numbers

* Fix too long lines of code

* Add test for negative cardinal number

tests/test_kz.py

@@ -44,6 +44,14 @@ class Num2WordsKZTest(TestCase):
         self.assertEqual(num2words(100.67, lang="kz"), "жүз бүтін алпыс жеті")
         self.assertEqual(num2words(0.7, lang="kz"), "нөл бүтін жеті")
         self.assertEqual(num2words(1.73, lang="kz"), "бір бүтін жетпіс үш")
+        self.assertEqual(
+            num2words(10.02, lang='kz'),
+            "он бүтін нөл екі"
+        )
+        self.assertEqual(
+            num2words(15.007, lang='kz'),
+            "он бес бүтін нөл нөл жеті"
+        )
 
     def test_to_ordinal(self):
         with self.assertRaises(NotImplementedError):