Refs #8534. AsymmetryCalc: set correct Y unit label.

No need to do that manually in MuonAnalysis.
Refs #8534. RemoveExpDecay: set correct Y Unit Label.

No need to do that in MuonAnalysis.
Refs #8534. Files for new MuonCalculateAsymmetry algorithm.
Refs #8534. Options declaration, simplest functionality.
Refs #8534. Two-period functionality.
Refs #8534. GroupAsymmetry option support.
Refs #8534. PairAsymmetry calculation.
Refs #8534. MuonCalculateAsymmetry: documentation.
Refs #8534. Merge remote-tracking branch 'origin/master' into feature/8534_muon_new_workflow_alg
Refs #8534. MuonAnalysis: new functions for calculations.
Refs #8534. MuonAnalysis: plotSelectedItem() using new functions.
Refs #8534. Plotting on Grouping tab using new functions.
Refs #8534. Removed unused functions.
Refs #8534. Fixed auto-update.

Plus make sure group for every run is created when run is loaded.
Refs #8534. Fixed re-plotting.
Refs #8534. More unused functions removed.
Refs #8534. Minor readability improvements.
Refs #8534. Better error handling.
Refs #8534. Minor UI fix.

Problems when updating plot on focusLost(). Plus same signal was
connected twice in different places.
Refs #8534. Fix compiler warning.

Switch needed a default value.