Persist discovered Bluetooth device list.
Validate Bluetooth device address before starting.
Fix Eclipse build....
Automatically pair and connect to new VI's after discovery.

See #68 - almost there, just need to perfect it.
Always re-init BT device list when opening settings.
Fill Bluetooth device list before settings activity is opened.
Don't break BT connection when going to/from automatic mode.
Kick off BT device discovery when switching bluetooth VI status.
Enable Bluetooth by default with automatic device search.

Fixed #68.
Fixed #69.