vtkWrappingPython changed to vtkWrappingPythonCore

vtkWrappingPython module has changed to vtkWrappingPythonCore along with
other changes. This commit has corresponding changes for PV to
accomodate for these changes. The following things were done.

- Renamed
  - vtkWrappingPython => vtkWrappingPythonCore
  - vtk_module_classes_load => vtk_module_headers_load
  - {module}_CLASSES => {module}_HEADERS
  - ${module}_CLASS_${class}_WRAP_EXCLUDE => ${module}_HEADER_${class}_WRAP_EXCLUDE
  - ${module}_CLASS_${class}_ABSTRACT => ${module}_HEADER_${class}_ABSTRACT

- Configured the VTK_PYTHON_LIBRARY_DIR in PV instead of VTK

Change-Id: I19112626d3226c7c1bc7145061882bb13244ba36
QuadraturePoints  -- any integer type for offsets

In PV SM XML, remove vtk id type qualifier, and add a category
in the menu.

Change-Id: I38fd56f40cbf55ae06a28629df7bc2cdca7a96b1
Add vcr toolbar widget for ParaViewWeb

Change-Id: I3a690a9da45c56600c8a75916cb0c3173930d281
Updating VTK.

The latest changes brings in changes to pythong wrapping. The current
topic has corresponding changes for ParaView.

Change-Id: I99605de0027f8521b3c9b897007ec6b4cb3b808f
Adding vcr + viewport toolbar into ParaViewWeb

code refactoring + move css/js/png around + fix main web app

Change-Id: I959b41c277c6a2a35dafbd025955642b34c838eb
Fully support ParaViewWeb viewport toolbar widget

Change-Id: I0d79b6fe48f31af9545a2ea2186d036e2976edcc
Merge topic 'paraviewweb-widgets'

4c99fc8 Fully support ParaViewWeb viewport toolbar widget
e9b151c Adding vcr + viewport toolbar into ParaViewWeb
91e899b Add vcr toolbar widget for ParaViewWeb
Merge topic 'python-wrapping'

83960ee Updating VTK.
5764546 vtkWrappingPython changed to vtkWrappingPythonCore
Merge topic 'quadrature-points-xml'

8918e4f QuadraturePoints  -- any integer type for offsets