latentsvm caskade
reworked PR 3

comment off #include "opencv2/core/private.hpp". It prevent the project from being referenced from outside the opencv library.

renaming + docs;
Merge pull request #127 from BKNio/lsvm_develop

latentsvm caskade
updated adience loader
minor update of ar_hmdb code
Merge pull request #129 from avdmitry/datasets_enh_adience

datasets module: enhancements