Update K-9 Mail to 5.200
New major version. Release announcement: https://k9mail.github.io/2016/12/26/K-9-Mail-5.200-released.html
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
New major version. Release announcement: https://k9mail.github.io/2016/12/26/K-9-Mail-5.200-released.html