*: fix legacy imports

This change reorganizes imports and renames the legacy flask extensions.

endpoints/notificationmethod.py

@@ -1,22 +1,28 @@
 import logging
 import json
-import requests
 import re
 
-from flask.ext.mail import Message
+import requests
+
+from flask_mail import Message
+
 from app import mail, app, OVERRIDE_CONFIG_DIRECTORY
 from data import model
 from util.config.validator import SSL_FILENAMES
 from workers.queueworker import JobException
 
+
 logger = logging.getLogger(__name__)
 
+
 class InvalidNotificationMethodException(Exception):
   pass
 
+
 class CannotValidateNotificationMethodException(Exception):
   pass
 
+
 class NotificationMethodPerformException(JobException):
   pass
 
@@ -26,6 +32,7 @@ if app.config['PREFERRED_URL_SCHEME'] == 'https':
   # TODO(jschorr): move this into the config provider library
   SSLClientCert = [OVERRIDE_CONFIG_DIRECTORY + f for f in SSL_FILENAMES]
 
+
 class NotificationMethod(object):
   def __init__(self):
     pass