putting the content in a section tag meaning the css wasn't being
applied like it should..

page working...  This is more documented in NOTES.md, which will
be committed shortly..

Slight modifications to Tufte to have some space on the right, and
add a custom.css to style the tags a bit better...

We can drop article.j2 as it was a test and isn't needed anymore,
and macros.j2 is empty now, and may be used for other things in
the future...