I'm glad to hear you go the FQDN issue resolved. We try to make that clear, but I'll try to see if we can do better in our documentation.
As for your last question about those buttons, yup, those are from JFBConnect. They are the social toolbar which helps to diagnose social sharing issues on your page and to push the current page to any social network's you've configured "Channels" for.
By default, the toolbar will only display to Super Admins when they are logged in. You can also show it to other user groups as well, if you want. To completely disable it, use the "Show Social Toolbar" setting in the JFBConnect -> Configuration area to get rid of it.
Thanks,
Alex