Preferred rate settings adapted to new code changes.

src/main/java/de/dennisguse/opentracks/fragments/ChartFragment.java

@@ -199,6 +199,11 @@ public class ChartFragment extends Fragment implements TrackDataListener {
             }
 
             category = track.getCategory();
+            boolean reportSpeed = PreferencesUtils.isReportSpeed(getContext(), category);
+            if (reportSpeed != chartView.getReportSpeed()) {
+                chartView.setReportSpeed(reportSpeed);
+                chartView.applyReportSpeed();
+            }
             startTime = track.getTrackStatistics().getStartTime_ms();
         }
     }

src/main/java/de/dennisguse/opentracks/fragments/StatsFragment.java

@@ -643,7 +643,7 @@ public class StatsFragment extends Fragment implements TrackDataListener {
 
     private void setSpeed(double speed) {
         boolean metricUnits = PreferencesUtils.isMetricUnits(getContext());
-        boolean reportSpeed = PreferencesUtils.isReportSpeed(getContext());
+        boolean reportSpeed = PreferencesUtils.isReportSpeed(getContext(), category);
 
         speedLabel.setText(reportSpeed ? R.string.stats_speed : R.string.stats_pace);