I'm switching the Symfony Demo app to Symfony Flex. I don't know what's the new practice to store the old `app/Resources/*` contents. For example, `app/Resources/views/` are now `templates/` but what about: * Translation files: `app/Resources/translations/` -> `translations/` ? * Overridden bundle templates, for example error pages: `app/Resources/TwigBundle/views/Exception/` -> ?? * Web assets (it's common to store the sources of the assets in that dir) `app/Resources/assets/` -> `assets/` ?