Clicking outside an activated dropdown should close it

[caendesilva]

To reproduce, either setup a dropdown or visit this hosted preview and click on the "about" dropdown in the navigation menu. It opens, and can be closed by clicking "about" again. I would also expect it to close when I click literally anywhere else. This should be a fairly easy fix as I think Alpine.js has a directive for this exact reason.

While we're at it, we should probably also support pressing esc to close it as well.