Refs #13264

Fix bug when setting green period in single-period mode data

I am going to refactor a bit the code. This will be useful for future work

No longer needed now we use leeroy

Performance tests for algorithm Fit

Fixed WedgeOffset parameter in Q1DWeighted algorithm.

disables users from deleting all graphs at once

Engg: write instrument parameters file for GSAS

Move logs in VesuvioResolution down to information

Properly convert degree into radian _everywhere_.

Fix CalculateMSVesuvio for sample/beam size ratios being comparable

Refs #13226

In the cases where a valid trajectory from the random point in the sample
to the detector cannot be formed, assume that the exit distance is
vanishingly small.
Refs #13226

Fix confusion between 'Output' and 'CreateOutput' in the documentation of `Fit`

Disables users from deleting the last graph 

Add option in DensityOfStates to broaden peaks as a function of energy

updates on FFT doc test by including a usage section

update on error messages when ticking combinations of options for LoadMD

Fix for parameter types in .rst file