translation update
Remove coComment support (was discontinued in 2012) closes #161
Fix e-mail messages of JapaneseModify the encode of e-mail messages from Shift-JIS to UTF-8.And add the e-mail message of confirmsubscribe.txt.
Fix messages of Japanese
added link to new comment to subscriber maildarcs-hash:20080622200358-23886-7549bc8d627300b3463d7ee0978f093d976322e0.gz
113 Japanese translation by Ikuo Obatayadarcs-hash:20070722110358-89468-0f7515daf36e3891d03fd57d1a0bc54948984ccd.gz