Issue #97, #98: Aggregate job info per day and per week as part of JobPr...

...ocessing Step in the ETL. Also enable a rest api to fetch this aggregated app info, use check and put to store number of runs, cost and queues,
Although it is existing code, it makes me wonder. If this threw an exception, can you proceed to the next? I would think newAppsKeys is null, and you'd get a NullPointerException in line 117.