BUG: Fix vtk python module dependency.

Due to a ninja+cmake issue, the python files were not copied over again
for ParaView if VTK's python files were changed. This fixes that issue.
See inline comments for details.

Change-Id: I67a23e35dcbdfc54c8674b2f0e8f0537863c4d01
Update Python calculator to use VTK's new python algorithms.

Updating Python calculator to use VTK's new Python module for data
processing operations using numpy. This replaces ParaView's earlier
implementation of Python modules for the same which have been
modified/improved and now moved to VTK.

Change-Id: I07c77cc0f86810f8616e4af52bda770ee7a90645
Update Python extract selection to use new numpy/VTK API.

Updating vtkPythonExtractSelection (and extract_selection module) to use
the new (and improved) Python/VTK/numpy API. The code now relies heavily
on the Python calculator to do the heavy lifting. Once the  mask array
has been generated vtkPythonExtractSelection/extract_selection extracts
the selected elements, as requested.

Change-Id: I5938b55128353047375e825c1eea5b2b033fc54e
Raise relevant errors for invalid expressions.

In extract_selection, ensure that the error reported is a little more
user understandable. We now report that the expression may be invalid if
the generated mask array is not as expected or if the expression
evalualtion itself raises exceptions.

Change-Id: I608dff0b77d5d553121dceff171e707a6029c7a9
Fix FindDataDialog test.

Temporarily disable ID based queries (updated test as well). Query-based
selection cannot support IDs anymore. We'll refactor that soon. Also
fixed pqQueryClauseWidget to not use component numbers for single
component arrays. That doesn't work anymore.

Change-Id: I68bcf2ac8d0fc0c62966feb7c5ee8d4e2b89d149
Merge topic 'numpy-interface-3' into next

9cd8a813 Fix FindDataDialog test.
4f2136ea Raise relevant errors for invalid expressions.
f57811aa Update Python extract selection to use new numpy/VTK API.
355bd6ec Update Python calculator to use VTK's new python algorithms.
853c26d7 BUG: Fix vtk python module dependency.