Know if the logs have been successfully sent to the server

[masimplo]

I am using a persistent queue to hold logs before passing them over to jsnlog so that I can keep logs between reloads. I still haven't figured out a way to know if the logs have been successfully been sent to the server, or they failed due to a network or server error so that I will know to remove them from the queue, or re-enqueue them.
I know jsnlog supports offline handling, but I need to persist the logs between reloads until it does that too.