[luci] Update Japanese translation

[Jo-Philipp Wich]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi!

Thank you for the patches, I committed all apllying parts.
Some lines got rejected unfortunately, can you re-send those missing
parts in an updated patch?

~ Jow
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAk3yagcACgkQdputYINPTPONlQCgp5/7CdMQI+Us1LfMani71640
A1MAn2yBMIvFKMjzrX1EjWG7/XUEUh2E
=4vDi
-----END PGP SIGNATURE-----