* Add possibility for hostname prefix for backups and allow usage of filedrop only sftp server
* Move config variable into else block
* Set value in case no backups where found on the server and housekeeping is disabled.
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Co-authored-by: Ad Schellevis <AdSchellevis@users.noreply.github.com>
Add a simple backup option using secure copy (sftp).
Easy to use with any unix/linux target server offering ssh services. Just add a public key to `~/.ssh/authorized_keys` (`~` = users home directory), upload a matching private key and set the remote location (for example `sftp://root@192.168.1.1//root/test_backup`)
[ssh-keygen](https://man.openbsd.org/ssh-keygen.1) can be used to generate a keypair.
