\Include and \x and working on dynamic website

This was the major final step of fully integrating the OurBigBook CLI into the dynamic website (besides fixing some nasty bugs that escaped passed by me from the previous newsletter).

The implementation was done by "simply" reusing scopes, e.g.: cirosantilli's article about mathematics has scope cirosantilli and full ID cirosantilli/mathematics.

That on the website is equivalent to a local file structure of:

The problem is that a bunch of subdirectory scope operations were broken locally as well, as it simply wasn't a major use case. But now they became a major use case for , so I fixed them.