Refactor MapMultiplicity

Remove unnecessary commented out code.
Refactor SIFTFeatureMatcher

spaces and intendation
Refactor SOMEvaluation

extract methods findFeatureNode and getNodeProbability.
extract method activateMatchedFeatureNodes
extract method displayHypothesisProbability
remove commented out code and unnecessary methods.
Refactor SOMSimpleEvaluation

make small intendation fixes.