errors: Move zilencer/error_notify.py to zerver/lib/.

zerver/lib/error_notify.py

@@ -1,15 +1,15 @@
 from __future__ import absolute_import
-from collections import defaultdict
-from typing import Any
-import logging
 
+import logging
+import six
+
+from collections import defaultdict
 from django.conf import settings
 from django.core.mail import mail_admins
+from typing import Any, Dict
 
 from zerver.models import get_user_profile_by_email
 from zerver.lib.actions import internal_send_message
-from typing import Dict
-import six
 
 def format_subject(subject):
     # type: (str) -> str

zilencer/views.py

@@ -10,12 +10,12 @@ from zilencer.models import Deployment
 
 from zerver.decorator import has_request_variables, REQ
 from zerver.lib.actions import internal_send_message
+from zerver.lib.error_notify import notify_browser_error, notify_server_error
 from zerver.lib.redis_utils import get_redis_client
 from zerver.lib.response import json_success, json_error, json_response
 from zerver.lib.validator import check_dict
 from zerver.models import get_realm, get_user_profile_by_email, \
     get_realm_by_email_domain, UserProfile, Realm
-from .error_notify import notify_server_error, notify_browser_error
 
 import time