Make social authenticator configurable.

Author: skie

config/users.php

@@ -59,6 +59,8 @@
         'Social' => [
             // enable social login
             'login' => false,
+            // enable social login
+            'authenticator' => 'CakeDC/Users.Social',
         ],
         'GoogleAuthenticator' => [
             // enable Google Authenticator

src/Controller/Component/UsersAuthComponent.php

@@ -79,7 +79,7 @@ protected function _loadGoogleAuthenticator()
     protected function _loadSocialLogin()
     {
         $this->getController()->Auth->setConfig('authenticate', [
-            'CakeDC/Users.Social'
+            Configure::read('Users.Social.authenticator')
         ], true);
     }