Revert "Revert "add temp fix for recreating thumbs from originals""
Revert "Revert "add temp fix for recreating thumbs from originals""

This reverts commit 7ea5b2dd957b19b723ad5673a601bb3086249a49.

codarchlab/idai-field-client,codarchlab/idai-field-client,codarchlab/idai-field-client,codarchlab/idai-field-client