copy the translations in common with 2.0.4. refs #242
2.0.4と共通の文言をそのまま反映. refs #246
2.0.4 から修正された部分を翻訳. refs #246
translation the part that has been modified from 2.0.4. refs242
insert some spaces. refs #242
Merge pull request #357 from wm3/issue246

#246 の対応
Merge branch '2.1' of github.com:garbagetown/playdocja into 2.1