try to implement the video in the viewer (need future test)
Merge branch 'videoViewer' into newVideoViewer

Conflicts:
	buttleofx/gui/viewer/qml/Player.qml
test video, tuttle.ffmpegreader doesn't work at this time
time and viewer working soon
Merge branch 'newVideoViewer' into viewerAndTime

Conflicts:
	buttleofx/gui/viewerGL/glviewport.py
	buttleofx/gui/viewerGL/glviewport_tuttleofx.py
reorganise folders in undo-redo
Merge branch 'viewerAndTime' into timeInViewer

Conflicts:
	buttleofx/gui/viewer/qml/Player.qml
implement management of time in the viewer

viewer should be able to read videos.
deleting useless print
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop

Conflicts:
	buttleofx/gui/viewerGL/glviewport_tuttleofx.py