Trigger events upon the completion of a shiny update

Plugins need to be able to do actions when a shiny update completes. While we don't have complete javascript actions and filters, we do have jQuery events that we can fire to assist plugin authors.  

See #31819


Built from https://develop.svn.wordpress.org/trunk@32061


git-svn-id: http://core.svn.wordpress.org/trunk@32040 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/updates.js

@@ -227,6 +227,8 @@ window.wp = window.wp || {};
 
 		wp.updates.updateDoneSuccessfully = true;
 
+		$(document).trigger( 'wp.plugin.update.success', response );
+
 		/*
 		 * The lock can be released since the update was successful,
 		 * and any other updates can commence.
@@ -262,6 +264,7 @@ window.wp = window.wp || {};
 		$message.text( wp.updates.l10n.updateFailed );
 		wp.a11y.speak( wp.updates.l10n.updateFailed );
 
+		$(document).trigger( 'wp.plugin.update.error', response );
 	};
 
 	/**

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-beta4-32060';
+$wp_version = '4.2-beta4-32061';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.