Img3D: standard camel case for file names

GUI/View/Realspace/RealspaceBuilder.cpp

GUI/View/Realspace/RealspaceBuilder.h

GUI/View/Realspace/TransformTo3D.h

GUI/View/SampleView/RealspaceWidget.cpp

Img3D/Build/Particle3DContainer.cpp

Img3D/Build/PositionBuilders.cpp

Img3D/Build/PositionBuilders.h

Img3D/Mesh/Box.cpp

Img3D/Mesh/Column.cpp

Img3D/Mesh/Cuboctahedron.cpp

Img3D/Mesh/Dodecahedron.cpp

Img3D/Mesh/Icosahedron.cpp

Img3D/Mesh/Plane.cpp

Img3D/Mesh/Ripple.cpp

Img3D/Mesh/Sphere.cpp

Img3D/Mesh/Truncbox.cpp

Img3D/Model/Geometry.cpp

Img3D/Model/Geometry.h

Img3D/Model/GeometryStore.cpp

Img3D/Model/GeometryStore.h