Resolving ticket 270: showing / not showing avatar actions

modeling/AVATAR/CoffeeMachine_Avatar.xml

modeling/DIPLODOCUS/SmartCardProtocol.xml

src/main/java/myutil/Terminal.java

src/main/java/ui/ActionPerformer.java

src/main/java/ui/MainGUI.java

src/main/java/ui/TDiagramMouseManager.java

src/main/java/ui/TDiagramPanel.java

src/main/java/ui/TGComponent.java

src/main/java/ui/TGState.java

src/main/java/ui/TGUIAction.java

src/main/java/ui/avatarsmd/AvatarSMDToolBar.java

src/main/java/ui/avatarsmd/AvatarSMDTransitionInfo.java