Support pushing and receiving updates to poll tallies (#10209)

* Process incoming poll tallies update

* Send Update on poll vote

* Do not send Updates for a poll more often than once every 3 minutes

* Include voters in people to notify of results update

* Schedule closing poll worker on poll creation

* Add new notification type for ending polls

* Add front-end support for ended poll notifications

* Fix UpdatePollSerializer

* Fix Updates not being triggered by local votes

* Fix tests failure

* Fix web push notifications for closing polls

* Minor cleanup

* Notify voters of both remote and local polls when those close

* Fix delivery of poll updates to mentioned accounts and voters

app/javascript/mastodon/reducers/settings.js

@@ -31,6 +31,7 @@ const initialState = ImmutableMap({
       favourite: true,
       reblog: true,
       mention: true,
+      poll: true,
     }),
 
     quickFilter: ImmutableMap({
@@ -44,6 +45,7 @@ const initialState = ImmutableMap({
       favourite: true,
       reblog: true,
       mention: true,
+      poll: true,
     }),
 
     sounds: ImmutableMap({
@@ -51,6 +53,7 @@ const initialState = ImmutableMap({
       favourite: true,
       reblog: true,
       mention: true,
+      poll: true,
     }),
   }),