Clean up unit tests bootstrap autoloading
Introduced Service\Base->getMeta() and moved $registerAppUrl to it
Removed $registerAppUrl from service class
Adjusted service credentials field names for each supported service
Removed QueryString->keyLabel and ->valueLabel since now there is a unified way to get service credentials field names for each service
Merge pull request #70 from wconsumer/issue/68-rename-service-credentials-fields

#68 Rename Consumer Key / Consumer Secret fields