- Modified sampling CS (positive/negative/classify)

- Added check in HAAR for window size
- Added some TODO
Renamed WeakClassifier in WeakClassifierHaarFeature

- Added other methods in StrongClassifierDirectSelection, BaseClassifier
- Removed width and height of TrackerStateEstimatorAdaBoosting (get
width and height from sample)
- Added update of strong classifier in TrackerStateEstimator
- Added some TODO
Added other stubs for TrackerBoosting