Speed assign by group

Add a way to quickly assign a task to all individuals in a user group.

See the "assign to group" in this mockup.  This would be a subtle link, to avoid people haphazardly choosing the group by mistake.

Also, it could bring up a confirmation prompt, similar to when you assign to an external user.

Point of distinction - This is NOT assigning it to the group itself.  It's just a shorthand way to add the individuals with less clicks.

I think this would make many people happy, without requiring a logic change.