* new BLE connection management
* defined NZArduinoConnectionManagerObserver protocol
* * whoever wants to be notified about it needs to implement the methods
* * the system is constantly trying to connect
* updated the NZMainControlVC and it implements the NZArduinoCommunicationManagerOnserver protocol
* the bluetooth connection is taken care of also in the GestueConfigurationScreen
Merge branch 'feature/improve_bluetooth_connection' into develop