add new branch for 3D view implementations
test commit
active features can be set by clicking in the featuretreeview now
Changes in the draw methods of the geometries and the beginning of the new rotation  with respect to the center of the scene, but doesn't work jet.
This is just a commit to make the files available on an other device.
Some changes in the 3D View.
3D view changes
exchange object for client server communication