by Dave Cohen: support markup for both connected and non-connected users on same page.  Avoids need for page refresh and works with Drupal page cache.

cleanup JS init code

Include extended perms when requiring authorization.

Added fb_api_batch() helper (but likely to change it in the near future, work in progress).

refs #1215624 by Dave Cohen: remove some (not yet all) references to apikey.  Facebook no longer provides it.

#1000452: possible fix, no langugage prefix rewrite

Also, fb_api() can be passed access_token.

#1066068 by Dave Cohen: fatal error on viewing user profile.

fb_get_vars() helper function.
misc cleanup.

new helper fb_api().