New features

Move upload location preparation so an extending class can change it depending on the item’s metadata

Issue #2996443 by olivier.br: Remove container type field in PhotoShelter Container vocabulary
Issue #2996446 by olivier.br: Use batch for delete form
Issue #2996488 by olivier.br: Get PhotoShelter user timezone and use it

Changes since previous release:
Add executable check to snippet directory preparation with consideration given to filesystem ACLs.
Revise message text, restrict message display to admin users, and log error messages.

Fixed issues:
https://www.drupal.org/project/user_agent_class/issues/2996222

Added exclude field.
Resolved issues https://www.drupal.org/project/user_agent_class/issues/2996222