Update japanese translations for new opinions.

オリジナル側の、起動ラジオの探索ポイントが出てこなくなる問題の修正に合わせて全ての翻訳キーの入れ替え作業を行いました。

Update japanese translations for new added 10 survivors scenario.

Since Japanese translation has been officially added in v1.0.0, the application destination of the translation has been changed to Japanese.

With the update of the original MOD, all the key numbers for translation have been changed, so we updated them.

Fixed character encoding.

Initial upload.