Rebuild tasks instead of cloning them when retrying a process

arkindex/documents/serializers/elements.py

arkindex/documents/tests/test_bulk_classification.py

arkindex/documents/tests/test_bulk_element_transcriptions.py

arkindex/documents/tests/test_bulk_elements.py

arkindex/documents/tests/test_bulk_transcription_entities.py

arkindex/documents/tests/test_bulk_transcriptions.py

arkindex/documents/tests/test_classification.py

arkindex/documents/tests/test_create_elements.py

arkindex/documents/tests/test_create_transcriptions.py

arkindex/documents/tests/test_entities_api.py

arkindex/documents/tests/test_metadata.py

arkindex/documents/tests/test_retrieve_elements.py

arkindex/images/tests/test_image_api.py

arkindex/ponos/tests/test_api.py

arkindex/ponos/tests/test_artifacts_api.py

arkindex/ponos/tests/test_models.py

arkindex/process/api.py

arkindex/process/management/commands/clone_process.py

arkindex/process/migrations/0016_process_start_fields.py

arkindex/process/models.py