Moved sender and prefix settings to mail page

src/pretix/base/i18n.py

@@ -10,7 +10,7 @@ from django.utils import translation
 from django.utils.formats import date_format, number_format
 from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext
-from typing import Dict, List, Union, Optional
+from typing import Dict, List, Optional, Union
 
 
 class LazyI18nString:

src/pretix/base/services/orders.py

@@ -4,9 +4,9 @@ from django.conf import settings
 from django.db import transaction
 from django.utils.timezone import now
 from django.utils.translation import ugettext_lazy as _
-from pretix.base.i18n import LazyDate, LazyNumber
 from typing import List
 
+from pretix.base.i18n import LazyDate, LazyNumber
 from pretix.base.models import (
     CartPosition, Event, EventLock, Order, OrderPosition, Quota, User,
 )