Add templates dir in MANIFEST.in
Add templates dir in MANIFEST.in

Fixes TemplateDoesNotExist when trying to see the email in the admin.
maykinmedia/django-mailer-2,maykinmedia/django-mailer-2,APSL/django-mailer-2,maykinmedia/django-mailer-2,APSL/django-mailer-2,APSL/django-mailer-2