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
UC-73 Fix Facebook sign up

* Update how sessions are created, saving user access tokens in Memcache for a few hours
* Add some error checking
* Fixed some places that still used the old FBConnect code
* Eliminate use of contact_email which doesn't exist
UC-84 Make sure we check for a title

Also added some logging for the AsyncCache code
UC-84 Be more direct about what we're trying to do
UC-70 Get rid of unused messages.
UC-84 Don't call the time function so much
Merge pull request #5249 from Wikia/UC-70

UC-70 Messaging changes
UC-53 UC-Added two strings that somehow escaped the i18n file.
Merge pull request #5267 from Wikia/UC-73

UC-73 Fix Facebook sign up
Merge pull request #5269 from Wikia/UC-84

UC-84 Make sure maintenance/CLI scripts run properly w/ FacebookClientHooks
Don't throttle in dev
Merge branch 'VideoSprint60' into UC-54

Conflicts:
	extensions/wikia/FacebookClient/FacebookClient.setup.php