[NTG-context] beginners manual

Hi, I 'reorganized' (split) the beginners manual and put it in svn, so anyone who is willing to translate can check out a copy. I didn't yet change anything (only the file structure etc) and the styles need a cleanup (more modern setup). Because each chapter now has its own file, we can (as suggested on this list) edit piecewise. Don't start yet. First we need to add/remove things and rewrite chapters. But you can try to compile the file. Hans