#3 ExpandableSection and ListSection

[Brad Baker]

Here is the source for the ExpandableSection and
ListSection.

The first class is an expandable area on the screen
that can contain other Componenents. The second
is a sortable list that presents a list of Strings,
Objects or Components on the screen.

It also contains a few fixes the other Components I
have submitted. The major one being that the
static "register" method is now in the front end
class not the rendering peer class.

An email in the discussion list outlines these
classes in more detail.

[Brad Baker]

ExandableSection and ListSection code plus fixes to other classes