Display Registration Lead Time in Event Description

Now that we've got this great feature of setting the number of days that a volunteer must register before an event, it would be great to have that displayed both in the event description as well as in the error message if they try to register too late.

I find a lot of volunteers don't know why they can't register (or cancel for that matter) within this period, so automatically communicating it would be convenient.

I realize we could just write the lead time in the description of the event but, for our organization, this means editing A LOT of events. Also, if we ever decide to change it, then we have to re-edit all the event descriptions.