-Update from WebTranslator v3.0:
danish - 15 changes by Hellwing
english_AU - 8 changes by mrtux
korean - 2 changes by telk5093
latvian - 1 changes by Parastais
luxembourgish - 6 changes by Phreeze


git-svn-id: http://svn.openttd.org/trunk@26143 6aa0318a-3be1-0310-93fa-89fd2396df07