Add user/device information when granting permission

[tobihagemann]

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Summary

I'd like to know exactly who or which devices I'm granting permission to.

Motivation

When granting permission to new devices, I can only see the number of devices that haven't been permitted yet. I don't know exactly which users or which devices require permission.

Considered Alternatives

No response

Anything else?

No response

[stefan-karg]

This feature would be important for us. When managing a larger number of projects + users it's otherwise not easy to ensure, to which device I'm currently granting access rights.

[overheadhunter]

This can be further improved by #191