Create ja_JP.lang

translated to japanese
some translated names are from [http://www26.atwiki.jp/minecraft/pages/477.html]
... and I throught.
Merge pull request #153 from yusukemac/patch-1

Create ja_JP.lang
Update zh_CN.lang

Some things have been deleted? >.>
Merge pull request #154 from ViKaleidoscope/patch-4

Update zh_CN.lang