* Remove `id` and `aria-labelledby` from all SVGs
* Update SVGLint configuration
* Remove `aria-labelledby` from documentation
* Remove `aria-labelledby` from website
because why not
Fix#413
Based on favicon from nginx.com
Full logo not used due to guidelines (min width 72px)
Outlined hexagon not used due to confusion with NodeJS
Color is not consistent on NGINX site