Update menu icons.

Update tab icons.
Place tab tag in the appropriate fragment.

MyTracks/src/com/google/android/apps/mytracks/fragments/ChartFragment.java

@@ -55,6 +55,8 @@ import java.util.EnumSet;
  */
 public class ChartFragment extends Fragment implements TrackDataListener {
 
+  public static final String CHART_FRAGMENT_TAG = "chartFragment";
+  
   // Android reports 128 when the speed is invalid
   private static final int INVALID_SPEED = 128;
   private final DoubleBuffer elevationBuffer = new DoubleBuffer(

MyTracks/src/com/google/android/apps/mytracks/fragments/ChartSettingsDialogFragment.java

@@ -16,8 +16,6 @@
 
 package com.google.android.apps.mytracks.fragments;
 
-import static com.google.android.apps.mytracks.Constants.CHART_TAB_TAG;
-
 import com.google.android.apps.mytracks.ChartView;
 import com.google.android.maps.mytracks.R;
 
@@ -42,7 +40,7 @@ public class ChartSettingsDialogFragment extends DialogFragment {
   @Override
   public Dialog onCreateDialog(Bundle savedInstanceState) {
     final ChartFragment chartFragment = (ChartFragment) getActivity()
-        .getSupportFragmentManager().findFragmentByTag(CHART_TAB_TAG);
+        .getSupportFragmentManager().findFragmentByTag(ChartFragment.CHART_FRAGMENT_TAG);
     View view = getActivity().getLayoutInflater().inflate(R.layout.chart_settings, null);
     final RadioGroup radioGroup = (RadioGroup) view.findViewById(R.id.chart_settings_x);
     radioGroup.check(chartFragment.getMode() == ChartView.Mode.BY_DISTANCE

MyTracks/src/com/google/android/apps/mytracks/fragments/MapFragment.java

@@ -57,6 +57,8 @@ import java.util.EnumSet;
 public class MapFragment extends Fragment
     implements View.OnTouchListener, View.OnClickListener, TrackDataListener {
 
+  public static final String MAP_FRAGMENT_TAG = "mapFragment";
+  
   private static final String KEY_CURRENT_LOCATION = "currentLocation";
   private static final String KEY_KEEP_MY_LOCATION_VISIBLE = "keepMyLocationVisible";
 

MyTracks/src/com/google/android/apps/mytracks/fragments/StatsFragment.java

@@ -48,6 +48,8 @@ import java.util.EnumSet;
  */
 public class StatsFragment extends Fragment implements TrackDataListener {
 
+  public static final String STATS_FRAGMENT_TAG = "statsFragment";
+  
   private static final String TAG = StatsFragment.class.getSimpleName();
 
   private TrackDataHub trackDataHub;