Quick “↑ Top” and “↓ Bottom” #239

It would be helpful to have small, unobtrusive “↑ Top” and “↓ Bottom” navigation on long pages, allowing us to jump directly to the beginning or end of the page, this would be especially useful when we want to access links, pagination, or other content at the bottom of the page, or quickly return to the top to review earlier content.
Thank you.