"SDK and Sourcecode" not localizable

l10n
#1

Hi,

When translating the zh-cn new design website, we find that this strings seems not localizable (we do not find them on pootle or on silverstrip):

SDK and Sourcecode
Download the SDK
Download the Sourcecode

(See here: http://zh-cn.libreoffice.org/download/libreoffice-fresh/ )

Thanks!

Kevin Suo