Exclude libraries from backup on iOS
Currently, the files in the app sandbox of the app are included in backups on iOS.
This is - so far - bad, as:
- We promise that a local library never leaves the system.
- If a device restores from backup and a library belongs to an (online) account, we trigger a (weird) sync, which is not what most users will expect.
We should - for now - completely disable backups on iOS (similar to what we do on Android).
Edited by Martin Hoeher