Continued plagiarismdetection control flow:
-Algorithm for reviewing solutions, make it skip redundant comparisons.
I.E. A + B/[B + A].
-Added toString in Person class
-Added toString in SolutionSimilarity class
-Added compareTo in SolutionSimilarity for sorting results
-Added equals override in  SolutionSimilarity for checking if a
comparison is redundant.
-Lastly, added some more simple testobjects in the testcase