AT:
- all types of duration report results have the data represented as string values instead of a number which represents millisencods since 1970
- the upgrade script is adjusted so that the report data is changed to the new structure
- the rest api documentation is adjusted accordingly
Context:
If the numbers are very large, the front-end might run into troubles interpreting the values as correct durations.
Hint:
A valid format could be based on the ISO 8601, e.g.
P[YYYY]-[MM]-[DD]T[hh]:[mm]:[ss].[mmm]