Create dataframe shifts timestamps

[mhsjacoby]

The function 'create_dataframe.R' shifts timestamps of hourly and daily data when no aggregation is occurring. This doesn't occur when feeding in monthly data and returning monthly data (timestamps and data are unchanged).

Expected behavior
We would expect that if no aggregation is occurring, the output of the data frame would have the same timestamps/values as the input.

input data:

output data:

[mhsjacoby]

Closed with release of v1.0.15