[CameraManipulator] add setRotationHeadKinect() and setRotationHeadDet() slots to separate rotation of graph for Kinect and Face Detection. update setRotationHead() method.
[fix] connect() methods in Kinect/OpenCVcores to use new setRotationHeadKinect/FaceDet() slots.
[CameraManipulator] add missing coments and fix missing bracket.
[fix] start priority of markers
SELECTION COLOUR change solour of selected nodes, edges and selection rectangle
[PickHandler] add hide/show toolbar on 't' key press
Merge branch 'hotfixes-separateRotForKinectAndFaceDet-David' of https://github.com/marconak/Arvis into develop