Changed use of prependClientTransformer to addViewTransformer.
Changed use of prependClientTransformer to addViewTransformer.

Because of: https://github.com/bschussek/symfony/commit/bec80157f9ff8bcadbdad85375bc9ea6fbafb6f8
XWB/FOSUserBundle,XWB/FOSUserBundle,FriendsOfSymfony/FOSUserBundle