-Update from WebTranslator v3.0:
belarusian - 4 changes by Wowanxm
catalan - 47 changes by juanjo
norwegian_bokmal - 3 changes by cuthbert
polish - 4 changes by wojteks86
brazilian_portuguese - 4 changes by Tucalipe


git-svn-id: http://svn.openttd.org/trunk@26464 6aa0318a-3be1-0310-93fa-89fd2396df07