ContainerSubtraction shift x changes

System Test for SplineSmoothing algorithm

Provide mandatory properties with mandatory validators in CreateMDHistoWorkspace

Engg GUI: move RB number field

Remove old code structure

CreateMDHistoWorkspace used a method in ImportMDHistoWorkspaceBase.cpp
to declare some of its properties. Decoupling these two classss
allows us to implement mandatory property changes to CreateM
CreateMDHistoWorkspace without affecting ImportMDHistoWorkspaceBase.cpp

Refs #13912

Refs #14082

Refs #14090

Fix stack corruption in LoadFITS

They pointed to real problem before but no longer.
Refs #14106

Disable strict aliasing warning on gcc4.4

Refs #14106

A known issue with gcc 4.4 & boost optional
Refs #14089

 - Use better variable names
 - Extract repeated operations to higher-level variables
Refs #14106

The buffer created for reversing the byte order was not large enough
to hold the number of bytes in the type so the overspill was corrupting
the stack.
Refs #14106

Tested using mantidplotnightly. Ran with success a full reduction. This ticket can be merged.

Refs #14082

Set/Get monitor workspace from Python.

QLRun Mantid Algorithm

Refs #14090

refs #14090

No errors were produced when performing the testing procedure. Beam center was shifted correctly in `0 iterations` test. Happy to merge

Refs #13826

Refs #14082

Refs #13826

Merge pull request #14080 from mantidproject/13757_correct_run_number_on_stitch_workspaces_for_refl_gui

Give more appropriate run number in stitched workspace names for SURF in Reflectometry GUI

EnggDiffraction::fixes red symbol displayed when run number given

Option of using old SplineSmoothing algorithm

Refs #13826

Sort column maintained across ICat search tabs

Refs #14006