Merge branch 'Use_glyphmapper_for_drawing_spheres' into 'master'

src/Cxx/Filtering/AppendFilter.cxx

src/Cxx/Filtering/IterativeClosestPointsTransform.cxx

src/Cxx/Filtering/LandmarkTransform.cxx

src/Cxx/Rendering/ColoredSphere.md

src/Cxx/Rendering/StripFran.md

src/Cxx/Rendering/WalkCow.md

src/Cxx/Rendering/WalkCowA.md

src/Cxx/Rendering/WalkCowB.md

src/Cxx/Snippets.md

src/Cxx/Snippets/PointToGlyph.md

src/Python/Filtering/AppendFilter.py

src/Python/Rendering/ColoredSphere.md

src/Python/Rendering/Cone4.md

src/Python/Rendering/Rotations.md

src/Python/Rendering/WalkCow.md

src/Python/Snippets.md

src/Python/Snippets/PointToGlyph.md

src/Testing/Baseline/Cxx/Filtering/TestAppendFilter.png

...ine/Cxx/Filtering/TestIterativeClosestPointsTransform.png

src/Testing/Baseline/Cxx/Filtering/TestLandmarkTransform.png