pyharmony timeout issue

[jimboca]

The pyharmony get_token does not seem to timeout. I disconnected the hub from power and get_token did not timeout after 10 minutes, which locks up the polling of all hubs. When the hub comes back up it does continue. So users will need to monitor the status of the hub.

Need to run each Hub in it's own thread so one does not lockup all of them. Also, add param to control if the hub is active. For now the only option is to comment out an inactive hub from the config.