TS-938 - Don't merge

Adding the config and a gen_server to handle the c* nodes. But this uses elysium 0.1.7 so the files changed are really misleading.

Also the query seems to work, but it is not currently being used.
It could happen but it would have no consequences, if the timer manages to call ``update_nodes`` while I was trying to cancel it it will simply queue an ``update_nodes`` message on the gen_server.