Robot TrajectoryCompound

Description
Creates a compound out of some single trajectories.

Usage

 * 1) Click on [[Image:Robot_TrajectoryCompound.svg|32px]]
 * 2) An empty TrajectoryCompound-object will be created
 * 3) Switch to the "Model"-panel
 * 4) Select Trajectories/Edge2Trac/DressUp-objects in the tree-view
 * 5) Switch back to "Tasks"-panel and click on to finish selection