ConfidenceEstimation and MincutGraph added.
A class that computes the triangleMesh out of the cutEdges has to be added.
Also another SurfaceExtractor class that calls the different computation steps (instead of happah.cpp)

A GraphCut can be computed, but the solution doesn't form a watertight, manifold seperation of source and sink by now.
 Has to be debugged.
ToDo: The SurfaceExtractor Class has to perform the iterative process.
Therefore the dilation steps to merge the old solution with the outside occupied voxels of a higher level have to be added.