Update japanese.php

Translated Engish into Japanese.
Update japanese.php
Update japanese.php
Merge pull request #255 from ando-masaki/master

Update japanese.php
Update japanese.php

Changed translation more enable to understand Japanese
Merge pull request #258 from ando-masaki/master

Update japanese.php
Update vietnamese.php
Small bug fix when fancybox is not called.
Merge pull request #260 from mrhung/master

Update vietnamese.php
Merge remote-tracking branch 'upstream/master'