* [FIX] auth_from_http_remote_user - Lint
* [FIX] server_environment - Lint
* [FIX] base_module_doc_rst - Lint
* [FIX] fetchmail_notify_error_to_sender - Fix XML view, it was the 'active' field from 'fetchmail_attach_from_folder' module which was targeted by mistake (belonging to another data model)