[#52511095] Updates title translation in CreateRunWorkFlowTasks dialog.
[#54731082] JobTasks now use a 'payload' (polymorphic assn) rather than additional_data

The payload for an ImportSourceDataTask is an 'ImportTemplate', for a RunWorkFlow task
it's just the existing AlpineWorkfile.

This includes a migration that will delete all your current job tasks. Sorry about that.