move over to CalendarMixin inherit

calendar_utils/models.py

calendar_utils/parser.py

...0_remove_districtpersonpage_ical_calendar_url_and_more.py

district/models.py

district/templates/district/district_person_page.html

.../0056_remove_mainpersonpage_ical_calendar_url_and_more.py

main/models.py

main/templates/main/main_person_page.html

shared/models.py