Update ja.js Japanese translation
Update ja.js Japanese translation

Correct a minor wording to fit on the operation.
ubiq/pyruswallet,ubiq/pyruswallet,kvhnuke/etherwallet,kvhnuke/etherwallet,egzumer/etherwallet,egzumer/etherwallet,mcdee/etherwallet,ubiq/pyruswallet,mcdee/etherwallet,egzumer/etherwallet,mcdee/etherwallet