-Update from WebTranslator v3.0:
afrikaans - 6 changes by telanus
belarusian - 3 changes by KorneySan
catalan - 5 changes by juanjo
korean - 2 changes by telk5093
russian - 2 changes by Lone_Wolf


git-svn-id: svn://svn.openttd.org@26731 6aa0318a-3be1-0310-93fa-89fd2396df07