Baurzhan Muftakhidinov wrote:

Thanks, Yann! I will use Transifex for updating translations. Unfortunately, all my emails with request for adding Kazakh language to Transifex give no result. I didn't receive any answer. Do you know, it is possible or not? Maybe there is another email to request, not only info@indifex.com

The translation is already there: http://www.transifex.net/projects/p/gajim/c/default/edit/po/kk.po

But you probably need to register there to be able to edit it.