display subject privacy level in UI

Bengfort requested to merge privacy-level-ui into main

Users currently get no feedback whether other users are also allowed to work with the same subject. For that reason I think it would be a good idea to display the privacy level in the UI.

2021-12-01_12-21-11

The color of the shield icon changes with privacy level (1: warning, 2: danger).

Edited by Bengfort

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