Improve Calypso user management

[escapemanuele]

Needs D135326-code to have the email of the invited user

Temporary, not so beautiful, design.

It can be shipped behind a flag only on development, or wait for design.

Testing

1. Apply the diff to your sandbox.
2. Sandbox public api.
3. Visit [live link]/people/team/[site slug]
4. Invite a user that is not connected to a wp.com user (should be gray)

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-95672

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-95672&env=jetpack

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

Sections (~234 bytes added 📈 [gzipped])

name    parsed_size           gzip_size
people       +909 B  (+0.2%)     +234 B  (+0.1%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[crisbusquets]

FYI I'm checking this now, @escapemanuele

[crisbusquets]

Hi!

Here's a design proposal: DASWajWXHUUjF4pu1yo4fI-fi-74_3489

The goal is to reinforce why the site owner needs to invite them "again" to the site, and also add a link to learn more about the Secure Sign On.

Let me know what do you think 🚀

Team member list

When adding a team member

I designed two proposals for this. I recommend the option with the tab (A) because it's less confusing: it doesn't combine different Invites and status.

[escapemanuele]

Done here: #88369