* added a simple measurement model with a single classifier
* PositionDependentMeasurementModel now extends the new SingleClassifierModel
* renamed the header-files of libCondensation and the tracking apps to the proper ending hpp
* removed condensation::Rectangle in favor of cv::Rect
* removed unecessary second parameter of SvmClassifier::loadMatlab
* renamed the second parameter of ProbabilisticSvmClassifier::loadMatlab to reflect the fact that only the logistic function's parameters are loaded from that second file
* removed the TODOs from the loadMatlab functions