Added support for Delete (only first item)

Added DeleteAction which deletes first item, modified Welcome.jsp -
added button for Delete, added struts tags to make sure that
DeleteAction is called, modified struts.xml - added action for
DeleteAction, and added Welcome.jsp as the result.  Modified
ToDoListAction.java - removed .action from todolist.action. Modified
ToDoListAction.java: Changed todoArray to public.