Improvement on selection of states in avatar for reachaiblity analysis

modeling/AVATAR/CoffeeMachine_Avatar.xml

src/main/java/avatartranslator/AvatarStateMachine.java

...main/java/avatartranslator/AvatarStateMachineElement.java

...ava/avatartranslator/modelchecker/AvatarModelChecker.java

src/main/java/tmltranslator/TMLSyntaxChecking.java

src/main/java/ui/AvatarDesignPanelTranslator.java

src/main/java/ui/GTURTLEModeling.java

src/main/java/ui/avatarsmd/AvatarSMDState.java