Program will now work even if some of rpi are offline.
Server settings are now saved in settings.json for easier update on servers.
Uploaded more testing files.
Also slight improvments of formating and comenting of the code
Heartbeat is now working between two devices (maybe even more, not tested yet). Crappy ID handeling is little bit fixed.
Mistake in line 57 fixed (> changed to <)
Cleared testing id table.
