1) Add fallback to use `msgid` when user input is empty during translation prompt.
Fixes:
1) Fix alignment and indentation issues in API request data formatting.
Extra:
1) Minor formatting and whitespace cleanup in placeholder regex and related functions;
2) Regenerate `.mo` file for `cs_CZ` locale.
Enhanced the `deepl_translate` management command with improved placeholder handling, error messages, and support for missing translations. Added `human_readable_id` and `is_business` attributes to the `Order` model, updating associated admin configurations to reflect these changes.
Introduce a Django management command to populate the `slug` field for Product instances where it is null. The command processes products in batches, handles errors gracefully, and logs issues for troubleshooting.
