* implement Dbus updateAccount and listDevices
implement updateAccount(deviceName<s>) to change device name
implement listDevices
update documentation
* implement Dbus addDevice and removeDevice
update documentation as well
* Dbus add/remove/list/update devices
modifications responding to requests by AsamK
* Dbus incorporating InvalidUri error
Co-authored-by: AsamK <asamk@gmx.de>