fbconnect 6.x-2.0-alpha3

#923268: Trigger or Rule for Friend Invite : added Rule for Friend Invite
#911432: Facebook icon no longer available from the facebook site : added fb icon to strem publish checkbox
#888756: W3C Validator and Facebook Plugin code: too much errors : added type attribute of script tag
#907958: Invalid Argument Given URL is not allowed by the Application configuration. : updated FAQ
#902088: Name and FB picture is not being used by drupal for some reason. : display user's profile picture via graph api with no fbml
#762276: Posting to Fan Page Wall : added to readme 'posting to fan page' instructions
#915724: Unable to now change button text : fixed text attr of connect button
#899038: Put "Publish to Facebook" option for node form in fieldset : moved 'publish to fb' option to fieldset
#741502: Disallow publishing of comments : added option to Disallow publishing of comments
#888442: Use direct user's email instead of proxied_email : using of direct user's email instead of proxied_email