[silverstripe] Silverstripe Ping Widget

As Silverstripe currently doesn't have built - in support for pinging services like technorati or weblogs, I created a little widget that makes this possible. 

Installing it is pretty easy: 

1. Download the zip file and extract it to the root of your SS-installation.
2. Run db/build.
3. Go to the cms and select the root of whatever page-type you're publishing children on. If you're using the standard blog module, this would be the 'Blog' page.
4. Choose the widgets tab, and drag the widget to the right to enable it. Save and publish the page.
5. The widget is now working.

Everytime a child page of the page where the widget is on gets published, it can ping technorati, weblogs and pingomatic. It makes use of 2 little external libraries (weblog_pinger and xmlrpc). Note that you don't need to download the libraries, they are already included in the widget.

To use SS widgets on your page (articleholder, blogholder, whatever) , make sure you have attached a widgetarea in your pageholder/articleholder/... model:

static $has_one = array( "WidgetArea" => "WidgetArea" );

function getCMSFields()
{
	$fields = parent::getCMSFields();
	$fields->addFieldToTab("Root.Content.Widgets", new WidgetAreaEditor("WidgetArea"));
	return $fields;
} 

Hope this is useful for someone. Let me know if you find any bugs or things that I might have overlooked.