Rework of the Avatar simulation window

doc/codegeneration/codegeneration_documentation.tex

doc/codegeneration/figures/simulationhelloworld.png

src/main/java/myutil/GraphicLib.java

...ractivesimulation/AvatarInteractiveSimulationActions.java

...vatarinteractivesimulation/AvatarMainCommandsToolBar.java

...eractivesimulation/JFrameAvatarInteractiveSimulation.java

src/main/java/ui/util/IconManager.java

src/main/resources/ui/util/stepforwardx24.gif