Python Wrapping for VTK adapted to new module structure.
mark wrapping option as advanced
cleanup unused includes_dirs/sources in cmake
Added statismo-core as link dependency. Further cleanup.

The data and test scripts are no longer copied to the build tree.
Added global option BUILD_WRAPPING, which turns on python wrapping for all modules.
Renamed wrapped project to statismo_VTK. Further cleanup of CMake files.
Merge pull request #87 from statismo/module-wrapping

Python Wrapping for VTK adapted to new module structure.