Code and data steps in workflows

A [[feature:ol-gene-workflows|workflow]] can run a Python or JavaScript script, format or shift a UTC timestamp, hash or generate a random string, and keep rows in a data table for later steps in the same process. Add step lists every step type in one searchable menu. A Python date in the script result comes back as an ISO-8601 string, and a failure names the script line. Data table rows are cleared when the process restarts.