added gps support

added compass support
added ui elements for gps and compass
added support for writing sensor data

sensors/dummy/SensorFactoryDummy.h

@@ -7,6 +7,8 @@
 #include "AccelerometerSensorDummy.h"
 #include "GyroscopeSensorDummy.h"
 #include "BarometerSensorDummy.h"
+#include "GPSSensorDummy.h"
+#include "CompassSensorDummy.h"
 
 /**
  * sensor factory that provides sensors that fire dummy data
@@ -31,6 +33,14 @@ public:
 		return BarometerSensorDummy::get();
 	}
 
+	CompassSensor& getCompass() override {
+		return CompassSensorDummy::get();
+	}
+
+	GPSSensor& getGPS() override {
+		return GPSSensorDummy::get();
+	}
+
 };
 
 #endif // SENSORFACTORYDUMMY_H