Test reproducing ABL artefact

We need a test reproducing artefacts like shown here on Youtube:

[![Youtube](https://img.youtube.com/vi/GAWQRMCzPTk/0.jpg)](https://www.youtube.com/watch?v=GAWQRMCzPTk)

[AVSForum](http://www.avsforum.com/forum/139-display-calibration/2644073-official-b-c-e-g6p-oled-calibration-thread-13.html#post49264553)