this class record data from accelerometer and magnetometer
and saved this in Model (DevicePosition)
added a model DevicePosition
saved magnetic-field data in model
added some commentary
added some commentary and some methode (getter and setter) for DevicePosition
i have changed some methode. i added the method onStartCommand() to record accelemeter and magnetic_field. and added the method onDestroy() to unregister the SensorListener in The Service
added the Service PositionListener to AndroidManifest.xml
added some Commentary
Merge branch 'feature/2540-LocalizationWithSensoren' into feature/2572-PicturepixelToGps

Conflicts:
	AndroidManifest.xml