Send a rather basic email notif

Also pep8 fixes

synapse/storage/event_push_actions.py

@@ -202,7 +202,6 @@ class EventPushActionsStore(SQLBaseStore):
         result = yield self.runInteraction("get_time_of_last_push_action_before", f)
         defer.returnValue(result[0] if result is not None else None)
 
-
     @defer.inlineCallbacks
     def get_latest_push_action_stream_ordering(self):
         def f(txn):

synapse/storage/pusher.py

@@ -256,4 +256,4 @@ class PusherStore(SQLBaseStore):
             {"pusher": pusher_id, "room_id": room_id},
             params,
             desc="set_throttle_params"
-        )
+        )