Bugfix: TrackRecordingService needs to send data from lastTrackPoint in it's 1s updates.

This also removes UI updates if a GPS measurement is received as 1s update should be sufficient.

Fixes #828.

src/main/java/de/dennisguse/opentracks/content/data/Altitude.java

@@ -1,5 +1,7 @@
 package de.dennisguse.opentracks.content.data;
 
+import de.dennisguse.opentracks.R;
+
 public abstract class Altitude {
 
     private final double altitude_m;
@@ -12,12 +14,18 @@ public abstract class Altitude {
         return altitude_m;
     }
 
+    public abstract int getLabelId();
+
     public static class WGS84 extends Altitude {
 
         private WGS84(double altitude_m) {
             super(altitude_m);
         }
 
+        @Override
+        public int getLabelId() {
+            return R.string.wgs84;
+        }
 
         public static Altitude of(double altitude_m) {
             return new WGS84(altitude_m);
@@ -30,6 +38,10 @@ public abstract class Altitude {
             super(altitude_m);
         }
 
+        @Override
+        public int getLabelId() {
+            return R.string.egm2008;
+        }
 
         public static Altitude of(double altitude_m) {
             return new EGM2008(altitude_m);