Merge remote-tracking branch 'origin/feature/6788_inst_view_scripting'. Re #6788

Conflicts:
	Code/Mantid/MantidPlot/src/Mantid/InstrumentWidget/InstrumentWindowMaskTab.cpp
Merge remote branch 'origin/bugfix/6865_EnableConvToMDPerformanceTests'
Temporarily change to comma-free number format. Re #6909.
Merge branch 'bugfix/6909_commas_in_tables' into develop. Re #6909

Conflicts:
	Code/Mantid/MantidPlot/src/Mantid/InstrumentWidget/InstrumentWindowMaskTab.cpp