Better support for the button as a link case

[crccheck]

This is a common use case: Creating a button that's just a link somewhere. Django's "View on site" does this with a redirect. That's the way this documents how to do it too: https://github.com/crccheck/django-object-actions#more-examples

But when I do this, I link off site. It'd be nice to handle this natively for security:

• user knows the url they're going to visit
• noreferrer
• rel=noopener