Add first round of labeling tools (#467)

* Rework notifications to sync locally in full and give users better control

* Fix positioning of load more btn on web

* Improve behavior of load more notifications btn

* Fix to post rendering

* Fix notification fetch abort condition

* Add start of post-hiding by labels

* Create a standard postcontainer and improve show/hide UI on posts

* Add content hiding to expanded post form

* Improve label rendering to give more context to users when appropriate

* Fix rendering bug

* Add user/profile labeling

* Implement content filtering preferences

* Filter notifications by content prefs

* Update test-pds config

* Bump deps

src/view/screens/Home.tsx

@@ -194,7 +194,7 @@ const FeedPage = observer(
           headerOffset={HEADER_OFFSET}
         />
         {feed.hasNewLatest && !feed.isRefreshing && (
-          <LoadLatestBtn onPress={onPressLoadLatest} />
+          <LoadLatestBtn onPress={onPressLoadLatest} label="posts" />
         )}
         <FAB
           testID="composeFAB"