Adding generic help button

modeling/DIPLODOCUS/ZigBeeTutorial.xml

src/main/java/help/HelpEntry.java

src/main/java/help/HelpManager.java

src/main/java/ui/TGHelpButton.java

src/main/java/ui/TGTextFieldWithHelp.java

src/main/java/ui/window/JDialogCPUNode.java

src/main/java/ui/window/JDialogMultiString.java

src/main/java/ui/window/JDialogTGComponentHelp.java

src/main/resources/help/helpTable.txt