-Update from WebTranslator v3.0:
catalan - 4 changes by juanjo
simplified_chinese - 79 changes by xiangyigao
english_US - 8 changes by Supercheese
indonesian - 7 changes by Yoursnotmine
italian - 1 changes by lorenzodv


git-svn-id: http://svn.openttd.org/trunk@26471 6aa0318a-3be1-0310-93fa-89fd2396df07