— By Aliya S. King Cities and towns around the world are taking steps to make sure they are growing in ways that support older residents. In New Jersey, two communities—Prince­ton and Montclair—have officially joined the global movement to become more age-friendly. When Susan Hoskins, executive director of the Princeton Senior Resource Center, learned about the AARP Network of Age-Friendly Communities, she knew hers should be added to the list. Communities must show progress in several areas, such as walkability and …