ADD: fields to show for peron's picture and filters.
ADD: method in class Person to obtain the parent asociated by sure name (family).
ADD: method in class Family to obtain the Person figured as family root.
ADD: tree creation for a complete family representation or restricted.
ADD: links to admin pages in templates.
ADD: formatted model documentation.
ADD: URL for diffrent tree representations.
CHG: support in 'tree' view for complete or restricted.