minor
renamed Spheres Trajectory, minor changes in Trajectory
refactored Trajectory: split into Trajectory and TrajectoryFrustums)
minor
for shapes switched vtkDataSetMapper to more efficient vtkPolyDataMapper
reading/writing trajectories
kinect camera CAD parameters
renaming
removed vizActor (since unnecessarily in new design concept with simplified widgets)
refactored Keyboard and Mouse Events
fixed potential crash
rewrote cloud widget in vtk filters style

Conflicts:
	modules/viz/src/clouds.cpp
refactoring
reading/writing clouds functionality
removed extra code
export scene to vrml and obj formats
getting data from opencv_extra
removed incorrect and unnecessarily methods from Affine3f
normals support for CloudMatSource
added vtkCloudMatSink, reworked cloud IO functions, added normals support