first draft for Ruby 2.1.0
update release date
update download links
fixed stable branch
update download links (ja)
fix wrong var
improve correct string
Retranslate Korean download page
Merge pull request #496 from namsk/ko-download-retranslation

(ko)Retranslate Korean download page
Remove trailing whitespace
Change list order on downloads page
Mention mruby on downloads page (en)
Mention mruby on downloads page (de)
Fix links
Merge pull request #472 from stomar/mruby

Mention mruby on downloads page (en)
Translate some latest news (pl)
Synchronize footer (pl)
Mention about mruby in downloads (pl)
update md5 and sha1
update announce date