Merge pull request #42 from lluisgomez/master

Adds The exhaustive search algorithm and updates the previous groupining algorithm; Add xml files with default classifier models;
Merge pull request #45 from lluisgomez/master

Adds OCRTesseract class and sample demo
Merge pull request #46 from lluisgomez/master

updates documentation for the text module
make ERFilter compile with refactored ml
Merge pull request #48 from vpisarev/refactor_ml2

make ERFilter compile with refactored ml
world fix
Merge pull request #50 from alalek/ocv_world

World fix
Merge pull request #47 from lluisgomez/master

adds MSERsToERStats function and its documentation; adds webcam_demo sam...
Added edge-aware filters.
fix opencl build error.
added face module (created from the parts of the old "contrib")
fixed facerec_demo compile errors
Added joint bilateral filter realization.
Experimental functionality (OpenCL versions and slow Weighted Median) was removed.
Merge pull request #51 from vpisarev/added_face_module

added face module
fix build error and doc warnings.
Removed OpenCL realization to test build.
Fixed cast error in samples.
fixed include error.
added outflow, bgsegm modules; moved matlab from the main repository