do not write out points now, #20
JUnitPointsMerger now able to load public/secret test class via -D param. #20
merging with public/secret test, #20
Extracted PointsPerExercise from secret/public test class, #20
extracted bonus points from class, #20
secretTest class should have no @Exercises-annotation -> no extraction, #20
back to old to avoid make fail, points calc in merger not finished yet, #20