Enable nicknames for children
''We've been using lifecake for a while now, and are loving it, but recently
some friends have had had a baby and given it the same name as our baby,
and there's no easy way to tell them apart. We could change our name to
make it distinct, but we don't really want to do that. Ideally we'd be able
to give a nickname to other people's babies, like you can for contacts.''