Moved some utility methods from wekaInstancesBuilder to
InstancesBuilder. Removed the former class file, as it is no longer
necessary. A version has been archived in case it is needed.
Cleaned up some code in Analyzer and added a method to compute some
statistics (for Train/Test classification only) JStylo-side rather than
weka side. This is not yet in use. Depending on how we approach the
AUROC issue, it will either be removed or used instead of the fake-Eval.
Changed some method names to be more descriptive.
Changed all pointers from WekaInstancesBuilder to InstancesBuilder's
methods