Enable change of HemisphereTracking during tracking (buggy!)
- Widget: TrackingDevice m_TD changed type (PolhemusTrackingDevice)
- Widget: Checkbox is connected and calls "SetHemisphere..." of tracking device
- Widget: Only one TrackingDevice is created (this was the issue!)
- PolTrDev: pass heisphere parameter on to Interface
- PolInterf: Method to enable/disable hemisphere tracking (not only on systemSetup)
- PolInterf: Method to print status of tracking device for debugging
- BUG: After Disconnect->Connect --> Too many tools are detected->crash. ToDo