Merged r11584 from trunk to 2.3-stable (#13420)

Korean translation changed by Jongwook Choi.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@11586 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r11585 from trunk to 2.3-stable (#13420)

Korean translation updated by Jongwook Choi.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@11587 e93f8b46-1217-0410-a6f0-8f06a7374b81