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
First steps for the undo redo feature
Small steps towards the undo redo feature for the paint segmentation
plugin with several images.
Undo redo for paint segmentation works just fine now even with several
images
Big commit for the Paint segmentation plugin:
- Now the paint brush can be changed via the ctrl + wheel
- Remove erase button
- Fix bugs with button gui
- New usage of magic wand. Now you set a seed and play with the sliders to
  obtain the desired result.
Removes useless commentary
Small changes on the magic wand sliders
Improves information about the seed in the paintPlugin
copy/paste slice
Paint segmentation : this commit defines functions to copy and paste from and into the 3d Mask
Now the slice can be changed with the Up and Down keys of the keyboard
First steps towards rbZoom

Conflicts:
	src-plugins/v3dView/v3dView.cpp
-Solves the lost of control of focus over containers
-Improves rbzoom activation
-keyevent from qvtkwidget are sent to medMainWindow enabling the
activation of shortcut via keypressevent and keypressrelease

Conflicts:
	app/medInria/medApplication.cpp
	src-plugins/v3dView/v3dView.cpp
Small changes
removes useless lines
Small improvements :
- Adds keyboard shortcuts for the magic wand
  - AcceptGrowth -> ctrl+Return
  - RemoveSeed -> ctrl+BackSpace
The shortcuts can only be activated when the magicwand is.
- Now, after interaction with the sliders/spinboxs/buttons of the
  toolbox the focus should go back to the view
- Now, when a seed is planted, a call on undo via ctrl+z will remove the
  seed.
Bring back focus to viewwidget after choosing Zoom interaction