I want to point out that now that Start11 1.2 has been released, we will be working diligently to get user-submitted translations included.
At the very least, we need the complete .lng file, just as rj79048 and ludekdanzer have done above me here. You should make sure your translated text fits in all sections of the Start11 UI.
Once submitted, it will be acknowledged and vetted. Once done, it will be included in the build, credit given in the changelog, and compensation given to the contributors - likely in the form of products (current and future).
We can't thank you enough for the effort and time.
Stardock Product Lifecycle Manager