fix for #8973: 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: http://redmine.rubyforge.org/svn/trunk@287 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/projects_controller.rb

@@ -262,7 +262,7 @@ class ProjectsController < ApplicationController
 						:conditions => @query.statement,
 						:limit => Setting.issues_export_limit
 
-    ic = Iconv.new('ISO-8859-1', 'UTF-8')    
+    ic = Iconv.new(l(:general_csv_encoding), 'UTF-8')    
     export = StringIO.new
     CSV::Writer.generate(export, l(:general_csv_separator)) do |csv|
       # csv header fields