Michael Catanzaro authored Apr 08, 2019 and Jan-Michael Brummer committed Apr 09, 2019

There's a lot of room for improvement still. E.g. I haven't updated any
of the images, and I haven't replaced the bookmarks documentation that I
previously deleted. Other features like reader mode aren't documented at
all. But this is better than we had before.

This also adds a new page for clearing personal data.

Fixes #293