Merge pull request 'master' (#330) from master into Docker

Reviewed-on: SGD-Nord/konova#330

intervention/models/revocation.py

@@ -79,6 +79,10 @@ class RevocationDocument(AbstractDocument):
         # Remove the file itself
         super().delete(*args, **kwargs)
 
+        if not self.file:
+            # If (for reasons) no file path has been added to the entry, we act as if the file did not exist
+            raise ObjectDoesNotExist
+
         # Always remove 'revocation' folder if the one revocation we just processed is the only one left
         folder_path = self.file.path.split("/")
         if revoc_docs.count() == 0: