Refs #7570 Swapped CubicSpline for BSpline.
Refs #7570 Fix issue with the BSpline swap.
Refs #7570 Swap to using ConvertToPointData algorithm.
Re #9900. PlotAsymmetryByLogValueTest.
Re #9900. CreateChunkingFromInstrumentTest
Re #9900. Clean  up.
Refs #9990. Added linear background function for POLDI

A function that is linear in workspace index, as a background function for POLDI 2D-fits.
Merge branch 'master', remote-tracking branch 'origin' into bugfix/7570_spline_smooting_error
Refs #9990. Behavior of Poldi2DFunction now match CompositeFunction
Refs #9990. PoldiCalculateSpectrum2D now has background terms

Background functions are added if specified by the user.
Refs #9990. Cleaning up.
Refs #9990. Removing debug output.
Refs #9990. Added algorithm properties to make testing easier.
Refs #9990. Added background example in documentation.
Refs #9990. Fixing unit test of Poldi2DFunction

Changed the behavior of PoldiSpectrumDomainFunction to be usable with CompositeFunction, had to adjust the unit test here to reflect that change.
Refs #9990. Fixing unit test of PoldiCalculateSpectrum2D

Forgot to include the composite function modifier in the tested string.
re #10066 ConvertAxesToRealSpace
Refs #7570 Refactor smoothing algorithm code.
re #10066 sort linux ambigous call
re #10066 sort linux warning