Fix cppcheck warnings in AlignedCutter.

Diffraction gui improvements

Convert Group 14 from Python 2 to Python 3

IndirectILLReductionFWS use new ConjoinXRuns

REF_M: Update IDF with sample dist log

Add a separate cmake variable for C++-only flags

Fix check_for_changes to account for new Qt paths

Fix ConvertMultipleRunsToSingleCrystalMD when using mask

Add support for unicode string conversion in python2

Also adds a __cplusplus check in the code.

ConvFit support for BASIS files

Allow PropertyManager creation directly from a Python dict

Enable ProductFunction to behave as a CompositeFunction in Python

This allows a PropertyManager to be passed directly to the
PropertyManagerDataService without requiring an algorithm. In addition
a python dict can also be passed directly to the data service without
having to create a PropertyManager first.

Improve masking behaviour of `Display Mask` in ISIS SANS GUI

Fix cppcheck issues in Kernel::Diffraction

Validate input point count for histogram interpolation

Custom ParaView representation for axis-aligned vtkStructuredGrids