Abstraction-Refactoring
=======================

X   Entities
    X   AbstrShape
    X   Group
    X   ShapeVisitor
    -
    X   Drawing
    X   Layer
    X   TransformationMatrix
    -
    X   XML-Schema
    
X   Scientific-Shapes
	X   XML-Schema
	X   XML-Taghandler/-writer
	X   JSON
    
O   Constraints
    O   as member of shapelist
    O   Eventhandling
    -
    O   XML-Schema
    
O	same for GWT