ACL should not be editable while event is still beeing processed

Steps to reproduce

Steps to reproduce:
1. upload a video
2. look at the ACL while the video is still processing
3. While does not give you a hint that this data should not be edit it seems that you could actually edit it.
4. Additionally if you edit it, the REST endpoint delivers a failure, but the ui shows the change (deleting a role, i.e.)

Actual Results:
Roles can be deleted or changed in the UI, with no effect if you reopen the ACL editor. Parsing errors and 403 http statuses are ignored

Expected Results:
The controls should be disabled. If an error occurs it should be displayed to the user.

Workaround (if any):

Fixed and reviewed
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Rüdiger Rolf


Rüdiger Rolf


Data Loss/Corruption