Material extension now deprecated as MkDocs for Material now implements
this logic directly.

https://pypi.org/project/mkdocs-material-extensions/

Add black and prettier check to lint

Fixes: #3250

- Add page last edited info on each page
- Update header - site title, repo name & icon
- Disable custom fonts, use system-fonts
- Add copyright info in footer
- Update navigation structure and behaviour
- Add source code view and edit buttons
- Refractor documentation

Fixes #3079