New programming course

[krzys_h]

The issue is that an actual version for the primary school classes cannot contain negative numbers.

I think we can do that. Negative numbers will be introduced in a later chapter.

Additionally all instructions have to be written in Polish. Logo has been adapted to that as it's Polish version is composed of commands like: prawo 90 or naprzód 20. We do not want such changes in the main project though so consider that a side note.

I'd really hate to be forced to do that, but it should be technically possible if really needed.