can't ask for 12 hours of loopback

[dax-dev]

Sending a request to v1/live with loopback_hours=12 returns an error indicating that loopback_hours cannot be more than 12. I'd guess the problem is the comparison here:

https://github.com/holofans/holoapi/blob/develop/apps/client-api/routes/v1/util/live.js#L56

but I don't have an environment that I can test this in. If this is intended behavior, I'd suggest changing the response message and the API docs to reflect that loopback_hours must be less than 12.