printers: Reduce notifications usage
It shows notifications when connecting to a device, authentication is necessary to use a printer, printer job statuses, including warnings, and successful completion.
All those even when the printers panel is opened. The notification look like they'll stay around forever, and not be adequate warning anyway (I had a "Paper jam" notification be archived the day I resolved the problem)
There's also a separate gsd-printers which will popup notifications when drivers need installation.
Notifications should be absent when the Printers panel is opened, notifications should disappear when the error has been fixed rather than archived ("paper jam", "driver installation").