Small improvements on the beziercurve project

Conflicts:
	src-plugins/medSegmentation/bezierCurveToolBox.cpp
	src-plugins/medSegmentation/bezierCurveToolBox.h
	src-plugins/medSegmentation/msegAlgorithmPaintToolbox.cpp
v3dview bezier code transfered to the plugin

Conflicts:
	src-plugins/medSegmentation/CMakeLists.txt
Working version for bezier curve on overlay plane (do not work if TODO (in beziercurvetoolbox) not done)

Conflicts:
	src-plugins/libs/vtkInria/vtkWidgetsAddOn/CMakeLists.txt
bezier curves appear only on the slice and orientation on which they have been created. Direct interaction with the currentView is possible now
interaction offset setted ! - Resolves several bugs with slice and orientation change - Copy/Paste works fine ! need however some tests to detect any bug
Propagate feature and balloonwidget project starts
First steps on the interpolation problem
Improved version
Correction of the bug with cells during interpolation. Starting to work on conversion Brush<->Polygon
Some corrections to compile on Linux
working version of PolygonRoi to brushROI tested only for one orientation

Conflicts:
	src-plugins/medSegmentation/bezierCurveToolBox.cpp
	src-plugins/medSegmentation/bezierCurveToolBox.h
commit not working
implementation with planeIndex taken into account. generateBinaryImage still does not work when the current orientation is not the same one as the bezier curve. I have removed a line that delete the previous toolBox it is a hack for the moment to prevent a bug. A better solution needs to be found

Conflicts:
	src-plugins/medSegmentation/msegAlgorithmPaintToolbox.cpp
Now the generateBinaryImage works for all orientations
First steps towards an advanced version of vtk balloon Widget

Conflicts:
	src-plugins/medSegmentation/bezierCurveToolBox.h
This commit adds:
- an abstract class for rois and a class bezierPolygonRoi
- a medRoiManagementToolBox which lists all the rois for a given view
- a medHistogramToolBox which contains a view to show histogram
- bezierCurveToolBox can now compute the statistics of a given ROI, it
 does not take care of the visualization of the bezierRoi anymore, this is
 now taken care in the bezierPolygonRoi
 - ...

Conflicts:
	src/medCore/CMakeLists.txt
corrects a bug that crashes the application when selecting a roi
corrects mac error
We start to work on improvements for the fillPolygonRoi idea
corrects bugs, changes button in beziercurvetoolbox, starts working on
statistics of roi