Reduce render cost of post controls and improve perceived responsiveness (#132)

* Move post control animations into conditional render and increase perceived responsiveness

* Remove log

src/view/com/post-thread/PostThreadItem.tsx

@@ -70,12 +70,12 @@ export const PostThreadItem = observer(function PostThreadItem({
     })
   }
   const onPressToggleRepost = () => {
-    item
+    return item
       .toggleRepost()
       .catch(e => store.log.error('Failed to toggle repost', e))
   }
   const onPressToggleUpvote = () => {
-    item
+    return item
       .toggleUpvote()
       .catch(e => store.log.error('Failed to toggle upvote', e))
   }