[CB-3561] Update documentation comments to match implementation

Affects CordovaInterface and CordovaActivity. There should probably be a
concerted effort to update this across the entire project.

framework/src/org/apache/cordova/CordovaActivity.java

@@ -64,11 +64,10 @@ import android.widget.LinearLayout;
  * As an example:
  *
  *     package org.apache.cordova.examples;
- *     import android.app.Activity;
  *     import android.os.Bundle;
  *     import org.apache.cordova.*;
  *
- *     public class Examples extends DroidGap {
+ *     public class Example extends CordovaActivity {
  *       @Override
  *       public void onCreate(Bundle savedInstanceState) {
  *         super.onCreate(savedInstanceState);
@@ -77,9 +76,6 @@ import android.widget.LinearLayout;
  *         super.setStringProperty("loadingDialog", "Title,Message"); // show loading dialog
  *         super.setStringProperty("errorUrl", "file:///android_asset/www/error.html"); // if error loading file in super.loadUrl().
  *
- *         // Initialize activity
- *         super.init();
- *
  *         // Clear cache if you want
  *         super.appView.clearCache(true);
  *

framework/src/org/apache/cordova/api/CordovaInterface.java

@@ -24,7 +24,7 @@ import android.content.Intent;
 import java.util.concurrent.ExecutorService;
 
 /**
- * The Cordova activity abstract class that is extended by DroidGap.
+ * The Activity interface that is implemented by CordovaActivity.
  * It is used to isolate plugin development, and remove dependency on entire Cordova library.
  */
 public interface CordovaInterface {