public class ConfirmedFriendsDataProvider
implements org.apache.wicket.markup.repeater.data.IDataProvider<Person>, Serializable
This implementation of Wicket's IDataProvider gets a list of confirmed friends
of userX, visible by userY.
This is used by MyFriends where a list of confirmed friends is required, and
in this case, both userX and userY will be the same so it calls a different method to get the friends list
(only requires userX)
It is also used in ViewFriends where userX is the owner of the page and userY is
the person viewing the page.