Dialog: Added button to the list of dependencies.

Author: scottgonzalez

ui/jquery.ui.dialog.js

@@ -8,8 +8,8 @@
  * http://docs.jquery.com/UI/Dialog
  *
  * Depends:
+ *  jquery.ui.button.js
  *	jquery.ui.core.js
- *	jquery.ui.widget.js
  *	jquery.ui.draggable.js
  *	jquery.ui.mouse.js
  *	jquery.ui.position.js