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,
I think using an hraven prefix for table names is the better way ahead considering that the hbase datastore can contain tables from other applications as well.
For existing tables, renaming them now may be a bit more complex since hbase does not have a rename command. The recommended way has a few steps, as listed here http://hbase.apache.org/book/table.rename.html 
We would need to disable the table and use clone snapshot to do it:

hbase shell> disable 'tableName'
hbase shell> snapshot 'tableName', 'tableSnapshot'
hbase shell> clone_snapshot 'tableSnapshot', 'newTableName'
hbase shell> delete_snapshot 'tableSnapshot'
hbase shell> drop 'tableName'