Merge remote branch 'origin/bugfix/7408_splatterplot_shutdown_warning'
Merge remote branch 'origin/feature/7360_fix_hfir_output'. Re #7360.

Conflicts:
	Code/Mantid/scripts/reduction_workflow/instruments/sans/hfir_command_interface.py
Add warning message about removing old API.

You can also suppress the warnings on a per-file basis.
Refs #7419
Merge branch 'feature/7419_old_python_api_warning' into develop

Refs #7419
Conflicts:
	Code/Mantid/scripts/reduction_workflow/instruments/sans/hfir_command_interface.py