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.
Refs #7570 Add missing doxygen comments for new methods.
Refs #7570 Fix usage example.
Refs #7570 Remove variable.
Refs #7570 Limit the max number of executions further.
Merge remote-tracking branch 'origin/bugfix/7570_spline_smooting_error'