fix that datepicker uses Simplified Chinese in Traditional Chinese locale (#13579)

Contributed by Chage Juan.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11682 e93f8b46-1217-0410-a6f0-8f06a7374b81
explicitly define jquery locale in en en-GB pt pt-BR

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11683 e93f8b46-1217-0410-a6f0-8f06a7374b81