STYLE: Fix 80 char limit in vtkMRMLDiffusionTensorVolumeDisplayNode

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23346 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: Fix vtkTeemEstimateDiffusionTensor

* The nrrd reader did not properly propagate the scalar type to the
pipeline on time.
* vtkTeemEstimateDiffusionTensor did not use a proper pipeline of filters
for the baseline and averagedwi outputs.

Fixes DWIToDTIEstimationTest and DiffusionTensorScalarMeasurementsTest

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23347 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: Fix vtkITKImageToImageFilter for VTK 6

The pipeline of filters was broken.

Fixes DiffusionWeightedVolumeMaskingTest

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23348 3bd1e089-480b-0410-8dfb-8563597acbee
BUG: Fixes auto level for DTI images

* CalculateAutoLevel was not called in VTK 6 when the image was modified
* CalculateAutoLevel was aborting with Diffusion tensor display node
because the scalar image data did not have a Scalars array
* Also use GetDisplayScalarRange() in qSlicerScalarVolumeDisplayWidget

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23349 3bd1e089-480b-0410-8dfb-8563597acbee