Fixed OS X compilation error in window_cocoa.mm

Un-commented `NSApplicationActivationPolicyRegular` argument (in leu of zero) and got rid of problematic dereference
Documentation fix on py_tutorials/py_feature2d
silence cmake 3.0+ warnings on LOCATION attribute
Add cv::setWindowTitle to highgui
Merge pull request #3432 from taka-no-me:wintitle
Merge pull request #3411 from eltermann:master
Merge pull request #3409 from fish2000:patch-1
Fix anchor for small symmetrical column filters.

In the unoptimized version of small symmetrical column filters, when we
try to detect if the kernel, ky, is equal to [1;2;1] or [1;-2;1] we
should take into consideration that the anchor points in the middle
element.
Remove redundant -mfpu=neon flag.

This flag is already added in line 131.
Merge pull request #3436 from oresths:compiler_option
Merge pull request #3435 from oresths:filter_anchor_fix
Documenting imgproc module

- disabled doxygen tree
- enabled doxygen enum listing
- added imgproc reference to main page
- enabled BiB support
- chenged doxygen root page format
Doxygen documentation for: highgui, video, imgcodecs and videoio
Doxygen documentation: calib3d and features2d modules
Doxygen doucmentation: ml module
Doxygen documentation: flann, photo and stitching modules
Doxygen documentation: cuda
Doxygen documentation: shape, superres, videostab
Doxygen documentation: viz
Doxygen documentation: cuda submodules reorganized