When employees leave, data protection laws in the EU demand cleaning out personal info, including pictures of users. In Confluence 5.7.4 there appears to be no way to "unset" a user's profile in the GUI, other than overwrite it with a dummy image. Older versions had a button to delete one's own pictures. Also it appears that previous versions of uploaded avatars accumulate in attachments/ver003/nonspaced/.. and are possibly unreferenced and lost disk space.
How to reset a user's avatar to at least show the default dummy icon again? Deleting a user is not an option, because information entered by the user needs to stay in place for a while. The workflow needs to be an "anonymization" of the user at first.
