Proof deadlines should adjust based on approver PTO

[#1]

It would be very helpful if we had the option for Proof Deadlines to automatically adjust based on PTO submitted by an approver.

[#2]

Or at least have a warning message saying the person will be on PTO during those dates, like it does now for tasks. 

[#3]

can we have Workfront system display a message alert when a user is assigned to approve a proof with an upcoming PTO? Thanks!