Currently when uploading datasets with associated hashes, this were
only validated if `validate_hashes=True` was also passed in the
request.
This commit drops `validate_hashes` completely and always validates
hashes when they were provided.
- Improves options and display around discarded datasets.
- Adds new APIs for importing model stores.
- Adds support to model store layer for importing/exporting workflow invocations and APIs and tests to support this.
- Add new DEFERRED dataset state - with APIs for materializing them or the option to defer them on the worker node if using tool_evaluation_strategy=remote on the job destination.
- UI and API options for uploading deferred datasets individually or into collections.
Nicola Soranzo