add global_conf to setting for both db init and db delete to fi database commands

tracim/command/database.py

         config_uri = parsed_args.config_file
         setup_logging(config_uri)
         settings = get_appsettings(config_uri)
+        settings.update(settings.global_conf)
         self._create_schema(settings)
         self._populate_database(settings, add_test_data=parsed_args.test_data)
 
         config_uri = parsed_args.config_file
         setup_logging(config_uri)
         settings = get_appsettings(config_uri)
+        settings.update(settings.global_conf)
         engine = get_engine(settings)
         app_config = CFG(settings)
         app_config.configure_filedepot()