Disabling translation and scaling now works.

These flags were ignored in the code. They have been inserted into the
event handling logic.

Change-Id: I31a03a8e4321a8a87cbf09503d731b2e5d335003
InsertNextCell and related method now return the proper vtkIdType.

Some of the methods in vtkPolyData and vtkCellTypes were returning int
when they should have used vtkIdType.

Change-Id: Icd5add3262934e355182fc9ae7a4a3ab1c7f3c47
Merge topic '0014443-vtkPolyData-InsertNextCell' into master

0b42c0e7 InsertNextCell and related method now return the proper vtkIdType.
Merge topic '0014241-vtkSphereWidget2-ScalingEnabledOff' into master

399f778d Disabling translation and scaling now works.