Description
This button recalculates the scheduling. A window opens: simply select an eligible date from the calendar. The dates proposed are those between the current start date for smoothing remaining work work and today's date.
This button only appears when remaining work has been entered on the project before the last smoothing start date.
The date is grayed out if it turns out to be unselectable: either before the project start date, or after the project end date.
Rights required : 
Update remaining work smoothing date Enter the remaining work of a resource
