bug 442254: Menu on disabled table row 
https://bugs.eclipse.org/bugs/show_bug.cgi?id=442254

Change-Id: I5825f397d5b9ed1dd8004446e8d0fff6cfe1090b
Reviewed-on: https://git.eclipse.org/r/34710
Tested-by: Hudson CI
Reviewed-by: Andreas Hoegger <Andreas.Hoegger@bsiag.com>