Project admin should be able to add existing users to its project

[flavens]

Is your feature request related to a problem? Please describe.
Only system admins can add users to any projects. But the project admin should be allowed to do the same for their projects.

Describe the solution you'd like
A project admin can add existing users in its projects. System admin can keep the privilege to create a new user.

Describe alternatives you've considered
N.A.

Additional context
Spotted during the drafting of the test protocol document.

[kilchenmann]

This is an issue in knora-api. Only system admin is able to get a list of all users of the system.

[subotic]

So, you need the whole list, so that the ProjectAdmin can pick a user and add him to the project? I could add this.

[kilchenmann]

@subotic That would be great.
Yes, similar to github, where you can add any existing user to a repository or to a team just by typing username or name.

[subotic]

It‘s merged. ProjectAdmin should now be able to get all users.

[kilchenmann]

Thanks @subotic. We will implement it into to the app asap.

[kilchenmann]

@subotic the implementation works but I figured out, that a project admin can create new user, which is good, but he can also set the new user as system admin, which shouldn't be possible. In the app I will disable the corresponding form element and I'll write an issue in knora-api (dasch-swiss/dsp-api#1552)

[flavens]

@kilchenmann what is the status of this issue? Still in progress due to (dasch-swiss/dsp-api#1552) ?

[kilchenmann]

I think we can close this issue. dasch-swiss/dsp-api#1552 has another topic and is part of the api. I solved the mentioned issue already in the app by disable system-admin toggle in user form.