Allow the wireless air sensor to join the mesh network

At present the wireless air sensor can’t join the mesh network and hence has to connect directly to the neoHub. This significantly reduces where you can place the wireless air sensor, since it has to be relatively close to the neoHub or you have to use boosters. If it could just send it’s temperature data to the nearest mesh network node, then you would have many more options of where to place the air sensor. To save battery life in the air sensor you could prevent it from being able to relay data from other nodes in the mesh. Potentially this should also increase battery life, since you should be able to reduce TX power to establish a link to the nearest mesh node, rather than high TX power to a distant neoHub.