This report will list the incremental planned workload between a given time
range using a given increment. This way, one may better at finding time to
schedule new tasks coming in.
The current implementation might be slow, because it's calling a complete
parsing process for each step in the overview report. One could instead think
about calling it only once and then disecting the individual tasks for when they
are planned specifically. But before we dive in these complications, let's
frist see whether the report is worth it.