BUG: maximum train and validation sizes were not correctly handled
(ac574321)

BUG: fix TrainImagesClassifier when bm=0.
(2a3cce86)

Correct initialization of comboBox Items and remove code redundancy.

This allow to use alpha parameter in non GLSL mode.

 Label is needed to perform mean shift segmentation but ModeSearch
 (needed to output label) was default set to false.

Now input vector with class is required for unsupervised classifier.
The cases where input vector data were optional for unsupervised
classification are commented.

Update license for added/moved files.