Hello Ramius,
Thank you for sharing your RadGridVIew German localization provider. It will be of great help for the people using German language. We will consider including this localization provider in our Demo application and in our RadControls suite as well.
I am adding 3000 Telerik points to your account. If you want to share additional localization providers, feel free to do it in this Code Library section.
Greetings,
Nikolay
the Telerik team