Merge branch 'VtkRedererIntegration' into 'master'

CMake/SuperBuild/External_vtk.cmake

CMake/SuperBuild/SuperBuild.cmake

CMakeLists.txt

Collision/MeshCollisionModel.cpp

Collision/MeshCollisionModel.h

Collision/MeshToMeshCollision.cpp

Collision/OctreeCell.cpp

Collision/OctreeCell.h

Collision/SpatialHashCollision.cpp

Collision/SpatialHashCollision.h

Collision/SurfaceTree.h

Collision/SurfaceTree.hpp

Collision/UnitTests/CollisionPairSpec.cpp

Collision/UnitTests/MeshCollisionModelSpec.cpp

Collision/UnitTests/MeshToMeshCollisionSpec.cpp

Collision/UnitTests/SpatialHashSpec.cpp

Core/BaseMesh.cpp

Core/BaseMesh.h

Core/CMakeLists.txt

Core/CollisionConfig.cpp