tm-delete-tiddler message deletes the specified tiddler and removes it from the current story. If the tiddler is a draft then it also deletes the tiddler specified in the
draft.of field. The delete tiddler message requires the following properties on the
|Title of the tiddler that is to be deleted
|Fallback title that is used if param isn't specified (automatically set by the ButtonWidget)
Use the ActionDeleteTiddlerWidget to delete a named tiddler without getting the "Do you wish to delete the tiddler" prompt.