Use a dialog for the welcome page. Thus the startup sequence

consists of three dialogs.
Rename to HelpActivity.
Fix activity button styles.
Reuse EulaDialogFragment when invoked from the AboutDialogFragment.
Only hide the title bar on the TrackDetailPage.

MyTracks/src/com/google/android/apps/mytracks/TrackDetailActivity.java

@@ -137,6 +137,7 @@ public class TrackDetailActivity extends FragmentActivity {
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setVolumeControlStream(TextToSpeech.Engine.DEFAULT_STREAM);
+    ApiAdapterFactory.getApiAdapter().hideTitle(this);
     ApiAdapterFactory.getApiAdapter().configureActionBarHomeAsUp(this);
     setContentView(R.layout.track_detail);
     
@@ -429,7 +430,7 @@ public class TrackDetailActivity extends FragmentActivity {
         startActivity(new Intent(this, SettingsActivity.class));
         return true;
       case R.id.track_detail_help:
-        startActivity(new Intent(this, WelcomeActivity.class));
+        startActivity(new Intent(this, HelpActivity.class));
         return true;
       default:
         return false;