website login

Two issues here:
- having to scroll all the way to the bottom makes it difficult to find when you don't know or don't remember it's down there. Most modern website have a login link right at the top
- It'd be great if there was a direct URL to login, this way it's easier to login with a password manager: Right now I have to:
- go to keybase.io
- scroll down to the bottom
- click on "login"
- go to keepassx
- hit ctrl-v

If there were a direct url, I could just:
- hit ctrl-u in keepassx
- hit ctrl-v

Start by inspecting the Keybase website at keybase.io, especially its navigation and current login flow, since the issue names no repository files or tests. The work is done when login is easy to find from the top of the site and a direct login URL works well with a password manager.

Written by the indexing model from the issue text.