Update on avatar block dialogs and improvements in help in avatar connector window

modeling/AVATAR/AirbusDoor.xml

src/main/java/ui/avatarbd/AvatarBDBlock.java

src/main/java/ui/avatarbd/AvatarBDPragma.java

src/main/java/ui/window/JDialogAvatarBlock.java

src/main/java/ui/window/JDialogBase.java

src/main/java/ui/window/JDialogPragma.java

src/main/java/ui/window/JDialogSignalAssociation.java