Update zh_CN.lang

Fixed lots of wrong translations, like some molten metals, and the translation of stained glasses, as well i change some the others translations witch are really unfit. Maybe the the former translator didn't play this Mod before? (°ー°〃)
Also, if I checked out the unfitting translation in this lang file(mine), or there was some new stuff added, i will give the updated translation.
Merge pull request #864 from ViKaleidoscope/patch-2

Update zh_CN.lang