Design for on-hub notifications in the admin bar

[hedgefield]

Continuing this on from #1, this is the place to discuss and iterate on the design of the notifications in the admin bar.

Below are the first few iterations already done. I will link to their original comments to preserve the context of the original posters:

• Original designs by @hedgefield from 2018
• Fresh new 2020 design by @folletto and @ibdz
• Iteration by @jasmussen
• Iteration by @hedgefield

I believe the first response was that the designs so far present the functional requirements of notifications as well as this specific UI usecase (a menu in the admin bar to view them) quite well already, but more feedback on that is always welcome, as well as nitty-gritty design detail discussion 🙂