bugfix: presenter emails are not showing up on the meeting detail page.

[JoeJasinski]

In the admin of the meeting detail page, we currently have a readonly field that should display the emails of all approved meeting presenters, for easy copy/paste into an email. This is useful for contacting the presenters before the meeting.

https:/chicagopython/chipy.org/blob/main/chipy_org/apps/meetings/admin.py#L116

That field appears to be empty now, even for events with approved presenters.

This is the method that generates that list which might need adjustments, or perhaps the way django sanitizes this type of input has changed between versions.

https:/chicagopython/chipy.org/blob/main/chipy_org/apps/meetings/models.py#L185

[JoeJasinski]

I believe something changed between versions. Here's the new syntax.
https://docs.djangoproject.com/en/5.0/ref/contrib/admin/#django.contrib.admin.ModelAdmin.readonly_fields

[JoeJasinski]

I got this working. See the related PR

[JoeJasinski]