Scoring update

Critical fix for scoring system:

• Re-named and modified presets: hamming (hamming distance based); 5,2,2,7 search scope followed by high-recall (precision corresponding to recall of 80%), optimal (precision and recall corresponding to highest F1 measure)
• Scoring selection by precision and recall (selects nearest pre-trained preset matching specified value)
• Ensure that exact matches are always reported disregarding score threshold