There was a problem whereby if vtkBoxWidget2 and vtkBoxWidget occurred
in the same document then, after the vtkBoxWidget2 link was created,
the vtkBoxWidget link was added into the vtkBoxWidget2 link. This
happened because vtkBoxWidget is a sub-string in vtkBoxWidget2.

This reverts commit 3b71be6f.

This reverts commit 9760cf29.

This reverts commit 678bf6e0.

- places the canvas inside a div to ensure canvas fills available height.

This reverts commit 9734a4a6.

This reverts commit 18481259.

This reverts commit 8bd5ebdb.

1) Simplified the regular expressions
2) Comments in the examples are now handled correctly
3) C++ interface and implementation files are separately processed