Added Ei property Refs #6850
New Algorithm to correct detector efficiency at ILL Refs #6850
New Algorithm to correct detector efficiency at ILL Refs #6850
Cleaning up. Single formula in the IDF. Better test. Refs #6850
Added error to the WS. Refs #6850
Efficiency calculated according to the IDL routine.  Re #6850
Merge remote-tracking branch 'origin/feature/6850_extend_NormaliseByDetector_userfitting'