update TODO
netiquette.yml: remove the "globals" block

Come on, nobody wants a "globals" block when you can use parameter
inheritance instead. So, installing "max-width" in root to make
inheritance work.

Not removing other (repetitive) "max-width" statements, even though
they have the same value, to keep maximal readability. After all, this
file is for humans, programs will understand it the same.