add revisions, version and commit of medinria and dependeces in the about section
revisions are now give by a macro in a  header located in the binaries
Change name of the macro REVISIONS_MANIFES -> REVISIONS, Fix encoding problem of REVISIONS
fixes #405, uses itk::GradientFileReader from TTK to support gradient files with tabs
Merge pull request #76 from rdebroiz/0000-rev_sha1

 	add revisions, version and commit of medinria and dependeces in the about section (home page)
Updated version to 2.1.2, updated changelog
Merge pull request #98 from ocommowi/405-fix-gradient-read

fixes #405, uses itk::GradientFileReader from TTK to support gradient files with tabs
Added missing export in medSliderSpinboxPair
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