Refactor: Use ConfigXmlParser in activity. Adds CordovaWebView.init()

This does subtly change the API surface due to CordovaWebView.init(),
but only minimally, and is backwards compatibly with the default
generated projects from prior versions.

bin/templates/project/Activity.java

@@ -22,16 +22,13 @@ package __ID__;
 import android.os.Bundle;
 import org.apache.cordova.*;
 
-public class __ACTIVITY__ extends CordovaActivity 
+public class __ACTIVITY__ extends CordovaActivity
 {
     @Override
     public void onCreate(Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);
-        super.init();
         // Set by <content src="index.html" /> in config.xml
-        super.loadUrl(Config.getStartUrl());
-        //super.loadUrl("file:///android_asset/www/index.html");
+        loadUrl(launchUrl);
     }
 }
-