Fix selection bug (unselect on open diagram and change tab)

src/main/java/ui/MainGUI.java

src/main/java/ui/TDiagramPanel.java

src/main/java/ui/TURTLEPanelPopupListener.java

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

src/main/java/ui/iod/IODRefIOD.java

src/main/java/ui/iod/IODRefSD.java

src/main/java/ui/tmlcompd/TMLCPrimitiveComponent.java

src/main/java/ui/tmlcp/TMLCPRefAD.java

src/main/java/ui/tmlcp/TMLCPRefSD.java