Updates to Reminder Emails:

1. Added default whitelist for reminder emails.

Updates to Clinic Configuration:

1. Added "Hide time in appointment reminders" configuration to allow hiding appointment time in reminder emails, SMS, and patient portal if appointment is not booked through Cortico.

2. Included stripping invalid characters from workflow slug when a new workflow is created.

Updates to API for plugin canned responses:

1. Fixed POST format for SavedMessageAPIView.

2. Added DELETE endpoint for SavedMessageAPIView.