Easy removal of uploads module
In many cases it's undesirable to have an automatically registered module that accesses your file uploads directly (for example, the uploads should only be available to selected users). While this could be removed in e.g. nginx configuration, it's easy to forget to do so creating a potential security risk.
Therefore the _uploads module that is added automatically should be easily removable - this could be an argument to configure_uploads or a config setting, e.g. REGISTER_UPLOADS_MODULE.