ovis: add methods (+sample) to play/stop animations

ovis: add entity property and according function override

ovis: fix overloaded method wrap aliases

ovis, samples: add animation to ovis demo

ovis: consolidate setting entity property

add python sample

* issue-2060: implement ability to return scores for edgeboxes implementation

* issue-2060: address feedback to add some foolproofing

ovis, aruco_ar_demo, remove trailing whitespace

Add missing codecs to cudacodec which uses Nvidia Video Codec SDK including checks to ensure codec used in input video file is supported on the current device.
Re-enable cudacodec performance test.

* doc: fix return parameter for void method

* docs: add missing parameter description

KinectFusion: several updates (#2133)

* truncateThreshold added

* demo updated for RealSense

* first Kinect2, then RealSense

* more distance-based parameters

original commit: https://github.com/opencv/opencv/commit/5c56b8ce9251050a4aadb9570ee598aaa14a2cf4

* added detection of inverted Markers, tests included

* corrections added, default preserved, identation, var, comment

Move background subtraction python tutorial to proper location (#2120)

* add tutorial from OpenCV-Python Tutorials

* remove trailing whitespace

* remove MOG2 part

* add cross-link to MOG2 tutorial

Incomplete sentence corrected. Resolves Issue #1997 (#2000)

* Incomplete sentence corrected. Issue #1997 

Resolves Issue #1997

``` FaceRecognizer::train(InputArrayOfArrays src, InputArray labels); ```

The type `InputArray` can accept `vector<T>` or `Mat` types as mentioned here: https://docs.opencv.org/3.4/d4/d32/classcv_1_1__InputArray.html

* Trailing whitespaces problem resolved

* Simplified quality API

* Compilation fixes

* test fixes

* Test updates

* Test fixes

* Fixed brisque data file location for install, test

* Increase error epsilon to account for multiple architectures