Fix the style file for VClassSzPublic
Use the DynamicGridLayout in VClassSzPublic
Change the way FullUpdate works
Simplify RootItem by using NodeWrapper
Remove unused references to PositionLayout
Remove broken and unused code associated - PersistentNode

In the future is such functionality is needed, it should be implemented
as an intermediate interface directly in FilePersistence, and it should
be based on GenericNode.