LPS-40249

Sorry, had to reopen this. We need to provide JSON WS registration for **all** plugins, not just portlets. For example, our `kaleo-web` registers services, Liferay-Sync web too.

JSONWS registration uses `BeanLocator` to iterate beans and register json ws services. If user is not using Spring for plugin (services), he is then not using service-builder and hence he has manually to set the remote service layer. JSONWS still allows him to register any bean instance, manually.