Change sensor setup logic.

Now it activates only if enable in the settings and the screen is off while navigation.

Remove router checkbox from preferences

OsmAnd/src/net/osmand/plus/activities/MapActivity.java

@@ -1293,7 +1293,7 @@ public class MapActivity extends OsmandActionBarActivity implements DownloadEven
 	protected void onStart() {
 		super.onStart();
 		stopped = false;
-		lockHelper.setSensor(false); //switch off sensor when activity active
+		lockHelper.onStart();
 		getMyApplication().getNotificationHelper().showNotifications();
 	}
 
@@ -1312,7 +1312,7 @@ public class MapActivity extends OsmandActionBarActivity implements DownloadEven
 			onPauseActivity();
 		}
 		stopped = true;
-		lockHelper.refreshSensorSettings();
+		lockHelper.onStop();
 		super.onStop();
 	}
 

OsmAnd/src/net/osmand/plus/helpers/LockHelper.java

@@ -144,6 +144,14 @@ public class LockHelper implements SensorEventListener {
 		setSensor(isSensorEnabled);
 	}
 	
+	public void onStart() {
+		setSensor(false);
+	}
+	
+	public void onStop() {
+		refreshSensorSettings();
+	}
+
 	public void setLockUIAdapter(LockUIAdapter adapter) {
 		lockUIAdapter = adapter;
 	}