|This is a base class for all pages with tree example.
|Panel that contains an text field that submits automatically after it loses focus.
|Page that shows a tree table with editable cells.
|Bean that is set to every node of tree as user object.
|Column, that either shows a readonly cell or an editable panel, depending on whether the current
row is selected.
|Page that shuws a simple tree (not a table).
|Page that shows a simple tree table.