Add ability to turn off links, add ability to theme links and user page favorites

My theme needed to place the Favore Node links in other locations. I've added a setting to turn off the addition of Favorite Node links and also added a theming function.

The code now looks like this:

/**
 * Implementation of hook_links().
 */
function favorite_nodes_link($type, $node = null, $teaser = false) {
  global $user;
  $links = array();
  if ($type == 'node' && !$teaser && variable_get(FAVORITE_NODES_SHOWLINK, 1)) {
    if (variable_get(FAVORITE_NODES_NODE_TYPE . $node->type, 0)) {
      if (user_access(FAVORITE_NODES_PERM_ADD)) {
        $links = theme('favorite_nodes_links',$node);
      }
    }
  }
  return $links;
}

/**
 * Allow theming of links().
 */
function theme_favorite_nodes_links($node) {
  if (!_favorite_nodes_check($node->nid)) {
    $links[] = array('title' => t('add to favorites'), 'href' => 'favorite_nodes/add/'. $node->nid);
  }
  else {
    if (user_access(FAVORITE_NODES_PERM_VIEW)) {
      $links[] = array('title' => t('in favorites'));
      $links[] = array('title' => t('remove from favorites'), 'href' => 'favorite_nodes/delete/'. $node->nid);
    }
  }

  return $links;
}