The bare fix re #4464

Still to do: A check of constant number of columns in LoadAscii and Correct column headers and wiki in SaveAscii.

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Merge remote branch 'origin/bugfix/7076_importAll_fails_script_window' into develop
Merge remote branch 'origin/bugfix/7599_ConfusingGetEI_ErrorMessage' into develop
Merge remote branch 'origin/feature/5008_furfit_param_passing' into develop
Merge remote branch 'origin/feature/7626_c2e_sofq_file_extension' into develop
Merge remote branch 'origin/bugfix/7575_python_console_delete_uneditable_content' into develop
Merge branch 'feature/7537_tiny_ticket' into develop
Merge branch 'feature/7634_version_number_2.6' into develop
Merge branch 'feature/7635_run_number_log' into develop
Merge branch 'feature/3464_fix_cancel_button_when_plotting' into develop
Tidied up LoadAscii.cpp checked its format checks re #4464

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Updated to move attenuation to instrument definition file.

Refs #4841
Merge branch 'feature/5007_c2e_calib_scale_option' into develop
Merge branch 'feature/3189_refactor_loadLog_processing_to_loadRawHelper' into develop
Merge branch 'bugfix/7599_ConfusingGetEI_ErrorMessage' into develop
Merge branch 'feature/7633_remove_old_api_option_in_ui' into develop
Merge branch 'feature/5151_remove_custominterfaces_dependencies' into develop
Merge branch 'feature/7053_remove_old_api_ornl_reducer' into develop
Merge branch 'feature/5151_remove_custominterfaces_dependencies' into develop
Merge branch 'feature/7553_mpi_auto_reduction' into develop