Displays number of merged MRs per week grouped by MR categories. These MRs could have been merged to any branch, not only `master`. The date used to place in a period is the date that the MR was actually merged. At the weekly level, we go back 12 weeks (1 quarter period)
Displays number of merged MRs per month grouped by MR categories. These MRs could have been merged to any branch, not only `master`. The date used to place in a period is the date that the MR was actually merged. At the monthly level, we go back 24 months (2 year period)