UC-70 Messaging changes

* Changed message key prefixes from facebookclient- to fbconnect-
* Copied over all messages from FBConnect extension to FacebookClient
* Fixed some wfMessage uses without an output format
* Added some (but not all) qqq

https://wikia-inc.atlassian.net/browse/UC-70
A note on these changes; there were a lot of keys added and existing keys moved around.  It might help to look at the file as is rather than in diff form.  I corrected a few spelling mistakes, changed double quotes to single quotes where possible and added some qqq messages.