Erase Select and Erase Data
Modify Segmentation toolbox layout
Paint : right-click for erasing

Conflicts:
	src-plugins/medSegmentation/msegAlgorithmPaintToolbox.cpp
	src-plugins/medSegmentation/msegAlgorithmPaintToolbox.h
No LUT and Preset properties for masks
Improve behaviour when a view is opened after 'Paint' selected, for instance
Real-time update of the cursor informations
First steps for the undo redo feature

Conflicts:
	src-plugins/medSegmentation/msegAlgorithmPaintToolbox.cpp
Small steps towards the undo redo feature for the paint segmentation
plugin with several images.

Conflicts:
	src-plugins/medSegmentation/msegAlgorithmPaintToolbox.cpp
Undo redo for paint segmentation works just fine now even with several
images