Refs #7570 Swapped CubicSpline for BSpline.
Refs #7570 Fix issue with the BSpline swap.
Refs #7570 Swap to using ConvertToPointData algorithm.
Merge branch 'master', remote-tracking branch 'origin' into bugfix/7570_spline_smooting_error
Refs #7570 Refactor smoothing algorithm code.
Refs #7570 Refactor unit test code.
Merge branch 'bugfix/7570_spline_smooting_error' into develop