Previously run level artifacts would be added with a particular job_id,
and updated artifacts would be stored as new objects each time. Refactor
to remove unnecessary instance variables, only provide a job_id when
required and add an update capability for largeobjects to ensure this
does not happen.
The Output processor which is used to upload the results found in the
wa_output folder to a Postgres database, whose schema is defined by the
WA Create Database command.
