- Fixed problem with class count not specified when processing pairwise strategies
- Added tests for bad number of classes for pairwise strategies
- Added more error handling, e.g. classification processor now stops on failure, stats box checks filename,
  roc curve tests for empty matrix
- Changed Kappa and ROC boxes to have more reasonable default values
- Changed classification tutorial to use native LDA for simplicity
- Removed some obsolete PLDA identifiers
- Typographical fixes