adding k1/k2 computation to 3dcurvatureViewer
refactoring of 3dCurvatureViewerNoise + adding k1/k2 computation
use of new II estimator in 2dLocalEstimator instead the deprecated one
use of new II estimator in 3dLocalEstimator instead the deprecated one
upgrade tools with last version of DGtal
some minor edit and optimisation
Merge pull request #155 from jlevallois/Refactoring_0_8

thank merging