Dynamic node reporting

The old broker-monitoring tool implemented a 7 days and daily data import summary.

If possible a dynamic version using a time window would be beneficial, using 7 days as the default window. The time window selector, should use different units like _day_, _week_, _month_ instead of only _day_. An example of a dynamic report could look like this:

## Default configuration

## Drop down for different time units

## variable value field
(in this image i changed the value from _1_ to _3_ manually)