Merged r11645 from trunk to 2.3-stable (#13514)

fix pt-BR "permission_set_notes_private" translation.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@11646 e93f8b46-1217-0410-a6f0-8f06a7374b81