Allow the user to use a datepicker to select an arbitrary date range to display the IT Services period.

The datepicker would replace the current (as of 1.8.3) period drop-down menu. The Zoom GUI control from the Graphs would do the job quite nicely.

This request is similar to ZBXNEXT-25, but I think it's a much more flexible and sustainable solution.

As I'm sure it's the case in many organizations, I need to provide monthly, quarterly and yearly SLA reports. Right now, unless I stay up until 23:59 of the last day of the month and select "last 30 days" in the period drop-down (and hope it's a 30-day month!) I need to do complex manipulations to get the data.