Change connected to enabled

Better represents the state of the bluetooth.
Should be somewhat working

 - Change BT connected to enabled. Better represents the state of the bluetooth.
 - Removed a couple of Yeoman files
 - Added in a narrow input CSS class
 - Changed the settings colour from brown to blue
 - Default the route to '' as the initial page wasn't loading when deployed as an app
 - Don't run the app until the device is ready
 - Displays the paired BT devise in the drop down on the settings page.
 - Added BT subscribe functionality that passes any data from the bluetooth model to whoever is listening
 - Check every 5 seconds to make sure that the BT is still enabled etc
 - If 60 seconds has passed and no message has been received then assume a lost connection