new VideoEngine
cleaning unused video engine: qtvideo, vlc, qtav, ffmpeg with widget
PhGraphicStrip doesn't use view anymore
Merge branch 'mdVideoGL' into mdVideoStrip

* mdVideoGL:
  cleaning unused video engine: qtvideo, vlc, qtav, ffmpeg with widget
  new VideoEngine
first working strip + videoEngine
better y handling for strip
Merge branch 'mdGraphicStrip' into mdVideoStrip

* mdGraphicStrip:
  better y handling for strip
better layout
fix default color to white for PhGraphicObject
adding reverse play to VideoTest
VideoTest can open another file
video playback optimisation
free AVPacket
fix video freeze
Merge branch 'mdVideoGL' into mdVideoStrip

* mdVideoGL:
  fix video freeze
  free AVPacket
  video playback optimisation
  VideoTest can open another file
  adding reverse play to VideoTest
Joker handle new video engine and strip
remove red background
fix bug on the left of the strip after resizing
Merge branch 'mdVideoStrip'

* mdVideoStrip:
  fix bug on the left of the strip after resizing
  remove red background
  Joker handle new video engine and strip
  fix video freeze
  free AVPacket
  video playback optimisation
  VideoTest can open another file
  adding reverse play to VideoTest
  fix default color to white for PhGraphicObject
  better layout
  better y handling for strip
  first working strip + videoEngine
  PhGraphicStrip doesn't use view anymore
  cleaning unused video engine: qtvideo, vlc, qtav, ffmpeg with widget
  new VideoEngine
Merge branch 'master' of https://github.com/Phonations/Joker

# By ThomasAy
# Via ThomasAy
* 'master' of https://github.com/Phonations/Joker:
  adding the de-activation for console output on PHDEBUG (see description)