Really log calls to wfDebugLog()

https://wikia-inc.atlassian.net/browse/PLATFORM-424

@Wikia/platform-team 

Start logging calls to ``wfDebugLog()``
Why not change wfDebugLog to do this directly if we're always going to return false here? This will cause confusion for anyone looking at wfDebugLog, since it's pretty much always expected that the hooks will complete successfully.