Provide info when users hover over AutoMatic Layout button in the Pedigree Editor

The information that should show when users hover over "Automatic Layout" when editing a pedigree should say:

"This feature is designed to make pedigrees look tidier by decreasing the number of times relationship lines cross. It may rearrange the order of individuals within a generation. As with any other change to the pedigree diagram, this action can be undone."