Simplification to hook_form

Creating an issue so to get an issue number to reference on commits...

All implementations of hook_form within Storm modules can be simplified as per this extract from the api.drupal.org node example module:

  if ($type->has_body) {
    // In Drupal 6, we can use node_body_field() to get the body and filter
    // elements. This replaces the old textarea + filter_form() method of
    // setting this up. It will also ensure the teaser splitter gets set up
    // properly.
    $form['body_field'] = node_body_field($node, $type->body_label, $type->min_word_count);
  }