Improve Correction Enumeration

Make the enumeration of all possible corrections more correct/bullet proof.

Current state of the feature

Currently this feature is implemented here. It fails to enumerate all possible corrections.

Justification

Since this function is used if no corrections are specified for reading in the ScanResults class, if a correction is not enumerated then it's results will never be read.

Examples

The correction "Background_OrbitDriftSep_OrbitDriftRate_ResidualOrbitDrift" is never enumerated.