Enabled java wrappers for bioinspired/retina module
Fixed bioinspired/retina OpenCL java wrapping
start to add proper sphinx docs; remove old stuff here
add functions with TODOs
almost done with API docs
api documentation complete; cvv now shows up in index
in future: write about gui
fix unresolved references by using different (old?) style ones
2.4 -> master:   :ocv:struct:`DMatch` -> :basicstructures:`DMatch <dmatch>`
cmake -DCVV_DEBUG_MODE= only belongs into tutorial
Fix documentation title in TOF and some typos
Registration sample: adapt to xfeatures2d
Moved namespace
added benchmark for fr_lfw dataset
renamed datasetstools to datasets
added Caltech Pedestrian dataset loading
enhance documents structure
added benchmark for ar_hmdb
refactored xfeatures2d in the same style as features2d
fixed xfeatures2d tests