0006541: Gramps crashes during import gedcom. Ignore empty ALIA alias name.

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@22298 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
Fix ListModel double click event

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@22306 4ae1f11a-8b86-4847-b8af-ab372f36d1fd