Scheduled releases and Connect v2

Releases can be scheduled for a publish time, with a scheduled state in the admin and a monitor for the drop emails that go out. Connect, the profile header, the fan feed, and analytics each got a second version, plus a support form, a QR code sharing page, and a black theme toggle. Fans can leave the artist a note, follow from the dock, choose to share their email with an artist, and turn a fan account into an artist account from settings. Shows appear in the feed.