back out r11683.

explicitly define jquery locale in en en-GB pt pt-BR.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11684 e93f8b46-1217-0410-a6f0-8f06a7374b81
add test of datepicker in Simplified Chinese and Traditional Chinese (#13579)

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11685 e93f8b46-1217-0410-a6f0-8f06a7374b81