Merge branch 'feature/JAL-3181linkOrdering' into develop

diff --cc src/jalview/gui/PopupMenu.java
index 86febed,4e02d21..702773b
--- 1/src/jalview/gui/PopupMenu.java
--- 2/src/jalview/gui/PopupMenu.java
+++ b/src/jalview/gui/PopupMenu.java
@@@ -75,13 -73,10 +75,11 @@@ import javax.swing.JColorChooser
  import javax.swing.JMenu;
  import javax.swing.JMenuItem;
  import javax.swing.JPopupMenu;
 +import javax.swing.JRadioButtonMenuItem;
  
  /**
-  * DOCUMENT ME!
-  * 
-  * @author $author$
-  * @version $Revision: 1.118 $
+  * The popup menu that is displayed on right-click on a sequence id, or in the
+  * sequence alignment.
   */
  public class PopupMenu extends JPopupMenu implements ColourChangeListener
  {