Tweak the time series test script to massage faux data to bins or the fill code will be unhappy.
Modified tests to handle the change in the back end data formatting.
Added mechanisms to return the "m_ts" (measurement timestamp) that was added to aggregations, changes to cassandra, api and added new tests to exercise it both from the json api and client libs.
Update gap scanning code to deal with the fact that cassandra returns a list of dicts and not lists now.