First draft of using privateCodes

[ue71603]

use privateCodes and no longer the depreciated PrivateCode:
#597

First version: Should it be done this way for all examples?

[skinkie]

The problem is 'with all examples' the obviously might be examples where it is not the first element. But give it a shot, if this is automatic. I think we can fix the exceptions more easily.

[ue71603]

It never is. It is always in a different position, but I think the number is not too big

[ue71603]

and having "most". would also be enough in my view.

[Aurige]

That's fine to me.
That's also something that we can do in a longer run: fixing the examples does not require a CEN NWI or a document update ... so we can directly update master whenever we find a new one to be fixed.