User Management: Reload data after creating a new user

[pmaier1]

After creating a new user, the "Edit user" view in the sidebar stays empty until you reload the page.

Expected behavior
After creating a new user, I can click on "Edit user" to change their properties.

Actual behavior
After creating a new user, clicking on "Edit user" gives you an empty page in the side bar.

cc @tbsbdr @kulmann

[kulmann]

@janackermann could you look into this?