* adds more log details on adding/removing documents * fixes bug in admin backend where restoring of non-compensation entries led to an error * fixes bug where deleting of revocation without an attached file would lead to an error
* reworks user logs for adding/removing revocations with more detail on log history * enhances css to display neat shadow on select2-results
* adds direct jump of viewport on related-data action (create/delete)
* splits intervention/models.py into subpackage
