Merge pull request #181 from adrienkaiser/update-DTIAtlasBuilder

BUG: fix QProcess if no GUI and fix windows compilation for ImageMath
BUG: FiberViewerLight packaging has been enterely changed to work properly on Mac
BUG: DTIAtlasFiberAnalyzer packaging has been enterely changed to work properly on Mac
Merge pull request #182 from booboo69500/update-FiberViewerLight

BUG: FiberViewerLight packaging has been enterely changed to work proper...
Merge pull request #183 from booboo69500/update-DTIAtlasFiberAnalyzer

BUG: DTIAtlasFiberAnalyzer packaging has been enterely changed to work p...
BUG: fix possible test error. COMP: fix DTIProcess windows compilation errors