-Update from WebTranslator v3.0:
catalan - 23 changes by juanjo
simplified_chinese - 50 changes by siu238X
traditional_chinese - 82 changes by siu238X
english_US - 49 changes by Supercheese
norwegian_bokmal - 2 changes by cuthbert
russian - 47 changes by Lone_Wolf
slovak - 1 changes by Milsa


git-svn-id: svn://svn.openttd.org@26738 6aa0318a-3be1-0310-93fa-89fd2396df07