Add Slovak (sk) translation
Add Slovak (sk) translation

pmattern/liblxqt,rbazaud/liblxqt,pmattern/liblxqt,ThomasVie/liblxqt,rbazaud/liblxqt,gilir/liblxqt-qt5,stefonarch/liblxqt,gilir/liblxqt-qt5,ThomasVie/liblxqt,lxde/liblxqt,stefonarch/liblxqt,lxde/liblxqt