[Observium] Remove Disks from polling/alerting

Hi all

Could it be possible to realize polling and alerting toggling for Storage similar to the settings under device's port properties? We have several devices showing their storages, some of them don't need to be shown. I know I can disable them in the config file with $config['ignore_mount_regexp'][] but that isn't that comfortable than doing it in GUI as it is realized for ports

Thanks Andre