Versions: Lit-Element to 2.4.0 and Lit-HTML to 1.3.0

It was only used in the demo.

Replace with the event bus for now

This fixes a typescript problem and allows us to enable type checking
in the typescript-example package (by removing the ts-nocheck comment)

In case the login process takes some time we would show a "login"
button which makes the user try to click it. There is a good chance
that aroudn that time we get logged in, so the click will log the user
out.

Avoid that by not showing anything during logging in.

lerna complains about this

And remove the custom publish commands

Takes a package name and a dest path. This way we can more eassily change the
layout and it will error out on package name typos or missing packages.