Drupal 7 Port

Takes advantage of some of the stuff in Drupal 7:

• AJAX Framework
• hook_page_alter
• hook_library
• jQuery Once
• jQuery UI in core

Developer notes:

• Wanted to try it out without needing the additional menu callbacks to make things a tad bit easier. You can still use hook_ajax_render_alter() to change how the dialog react as demonstrated with the random size changes for the Simple Test link. The good thing about this is that it now acts like the Overlay out of the box :-P .
• It only acts on links right now. Has to also process buttons for confirm_form() when you click on the Delete buttons and stuff.
• It doesn't move the buttons from the form into the dialog yet.
• I left in a bunch of your old code (dialog2.js vs dialog.js) as I'm sure we'll want to adapt it in. Like the button stuff.