The family selection dialogue should be external to pedigree editor.
This removes the need to first open pedigree editor for the patient, create a pedigree, save, then redirect to pedigree editor page for the family.
This fixes a number of problems:
1) Patient pedigree may not be initialized from imported pedigree (an error occurs on save, since current patient is not llinked to a node in imported pedigree, unlike automatic linking to template's proband node)
2) blinking of the UI and an extra save operation