changes to model tests - such that a given device will be assigned one and only one display_group as its test display group and from this display group it will get its test day start and test day start seconds in local time zone. Time zone comes from the site which is part of the display group.
site id is being stored for each device and device data row currently. though these values are not in use.
changes to model tests - such that a given device will be assigned one and only one display_group as its test display group and from this display group it will get its test day start and test day start seconds in local time zone. Time zone comes from the site which is part of the display group.
site id is being stored for each device and device data row currently. though these values are not in use.