Decide who receives notifications for new shift and timesheet comments ⏰

Depending on where the comment is made, ticking managers of employee does the following:

Shift comments:
Send to contactable department manager handling the shift (if any)
Timesheet comments:
Send to contactable department managers of each shift (if any)
Non-timesheet/shift comments:
Default behavior

The previous default was sending a notification to those who have commented, which would be no one, if the person is the first commenter.