CORE-5386 Renamed transformation_activity_references to app_references.

Updated the app_references id to a uuid field instead of a 'hid'.
CORE-5386 Renamed transformation_task_steps to app_steps.
CORE-5386 Renamed app_steps 'hid' field to 'step'.
CORE-5386 Renamed dataobject_mapping to workflow_io_maps.
CORE-5386 Renamed template to tasks.
CORE-5386 Removed tasks 'hid' field.