Merged r11671, r11672 and r11674 from trunk to 2.3-stable (#13405)

Fixed commit link title escaping.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@11678 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r11675 from trunk to 2.3-stable (#13552, #13551)

Dutch translations for 2.3-stable updated by Pieter Nicolai.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@11679 e93f8b46-1217-0410-a6f0-8f06a7374b81