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.
@jaynel I thought about it, but this makes it simpler to prevent new requests to go trough until the last one was received. Meaning that I have a ``pending_request`` property and only if it is undefined I allow a new request to be made.

Since the timer done message arrives before the 'DOWN' one, I set it to undefined there.