Also:
- New schema version 8 with video/image thumbnails, screenshots, sizes
- Upgrade messages not at current schema version when loading messages
to show in conversation
- New MessageDetail react component
- New ConversationHeader react component
We missed a couple directories with previous attempts to turn this on
globally: app/ and libtextsecure/
Not to mention files in places we didn't expect: ts files that weren't
in the ts directory!
This turns prettier on for every file we care about (js, ts, tsx, md)
everywhere in the project but for a few key parts.
