Fix for #9.
Export feature(to csv/pdf) doesn't work in Japanese
csv and pdf encoding are know defined for each language
(general_csv_encoding and general_pdf_encoding keys in lang files)
added SJIS font for japanese pdf exports.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@5249 e93f8b46-1217-0410-a6f0-8f06a7374b81