improve the reporting on Industry FE price scaling during calibration

[0UmfHxcvx5J7JoaOhFSs5mncnisTJJ6q]

Lots of very small scaling differences caused hard-to-understand output.
Sample of new output:

pm_cesdata('2015','EUR','fehe_otherInd','price')            5.851E+00 x (1 +  2.220E-16) =  5.851E+00
pm_cesdata('2015','EUR','feelhth_otherInd','price')         3.263E+01 x (1 +  2.220E-16) =  3.263E+01
pm_cesdata('2015','EUR','feelwlth_otherInd','price')        1.233E+01 x (1 +  2.220E-16) =  1.233E+01
pm_cesdata('2020','EUR','feso_cement','price')              3.629E+00 x       9.875E-01  =  3.584E+00
pm_cesdata('2020','EUR','feli_cement','price')              1.364E+01 x       9.875E-01  =  1.347E+01
pm_cesdata('2020','EUR','fega_cement','price')              5.760E+00 x       9.875E-01  =  5.688E+00
pm_cesdata('2020','EUR','feh2_cement','price')              2.116E+01 x       9.875E-01  =  2.090E+01
pm_cesdata('2020','EUR','feel_cement','price')              8.253E+00 x       9.875E-01  =  8.150E+00
pm_cesdata('2020','EUR','feso_chemicals','price')           4.626E-01 x (1 -  1.237E-03) =  4.620E-01
pm_cesdata('2020','EUR','feli_chemicals','price')           1.738E+00 x (1 -  1.237E-03) =  1.736E+00

• New feature

Checklist:

• My code follows the coding etiquette
• I have performed a self-review of my own code
• Changes are commented, particularly in hard-to-understand areas
• I have updated the in-code documentation
• I have adjusted reporting where it was needed
• The model compiles and runs successfully (Rscript start.R -q)

[0UmfHxcvx5J7JoaOhFSs5mncnisTJJ6q]

@LaviniaBaumstark *bump*

[LaviniaBaumstark]

much better to read!