Handling play and task parallel arrival seems to be working now. Removed 'search' and 'status' labels from search dialogs. Job events viewer now displays JSON objects as nested tables. Re-ordered host event viewer fields, adding host name, and fixing links so that only the status column is clickable.
For reasons yet to be determined the status field on job_tasks and possibly job_plays may contain 'Token is expired' rather than a numeric return code (i.e. 400, 401, 403, etc.). Changed process_errors to look for this condition and trigger session timeout behavior.