Feature: Added blaaskaak's mod for a Today's Birthday Portal Island. Under Portal Settings there is an option to only include users online within a certain number of days.
Added some extra code so this island is only rebuilt at the beginning of each day under normal conditions. It will also rebuild when a new user registers or somebody changes their profile.
On a busy forum with lots of new registrations will re-building it several times a day be a good idea - can see situations where it is rebuilt one second and then re-built a few seconds later.
Could it not re-build at the most once an hour?
