Duplicati-client

Fixed an issue exporting backups with `--all` parameter, thanks avmaksimov

Fixed an issue with the client not being able to connect to ports other than 443 when using HTTPS.

Added support for the new Vacuum API command - Thanks drwtsn32x

Corrected error handling of list command when encountering no entries

Added preliminary support for exporting serversettings

Added server url to status printout

Made timestamp optional in filename when exporting backups