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
I added entries for all the keys listed above, but there are just too many keys to research and describe here.  I added descriptions for the keys that are new or have changed and left the rest.  We'll be updating this interface a lot in the coming weeks so we should just make a point to update these as we change the interface.