Converted langs to new system

Notes:
1) All files converted to UTF-8 and .lang extension
2) uk_UA.lang based on ru_RU.lang (I think it is better than English strings in uk_UA.lang)
3) Core pt_BR.properties has broken unicode letters. So it is not ported to pt_BR.lang until someone fix it by hand. Maybe I do it later.
4) .properties files still not deleted. They can still be useful.