Add option to submit to Postgres

[breadlysm]

Is your feature request related to a problem? Please describe.
Limitation of Influx

Describe the solution you'd like
Within the varken.ini, the option should be available to use postgres or Influx. The option to use both should be considered a possibility.

Additional context
What I really want is the ability to splice the data into hourly buckets. What I want is 30 days of data that does not care about the data and aggregates only into quarter-hours. A true avg of when the server is used most. With Influxdb, detaching the date or rewriting the date doesn't appear possible. In postgres, I can take the times of the last 30 days and attach them to a now()::date to form a timestamp that is shows all 30 days of data and 'tricks' the time series into thinking it's today.