New update for #FediHood!

- Announcements tab with an unread badge.
- Pull to refresh the timeline, no full page reload. Opening notifications clears the phone's too.
- Reaction notifications now show the emoji used.
- The composer has a type picker: message, event or community post.
- Events can be fully edited, and editing a post keeps its original formatting.
- From any profile, you can mention or send a direct message.
- Fixed remote accounts on the map.