Add database objects for roast scheduling

config/Windows/navigation.xml

             var query = new QSqlQuery;
             query.exec("ALTER TABLE roasting_specification ADD COLUMN spec jsonb");
             query.exec("ALTER TABLE roasting_log ADD COLUMN additional_data jsonb");
+            query.exec("CREATE TABLE IF NOT EXISTS scheduled_roasts (id bigserial PRIMARY KEY, machine bigint, \"time\" timestamp without time zone, data jsonb NOT NULL)");
+            query.exec("CREATE OR REPLACE FUNCTION notify_scheduled_roasts_changed() RETURNS trigger AS $$ BEGIN NOTIFY ScheduledRoastsChange; RETURN NULL; END; $$ LANGUAGE plpgsql");
+            query.exec("CREATE TRIGGER notify_scheduled_roasts_changed AFTER INSERT OR UPDATE OR DELETE OR TRUNCATE ON scheduled_roasts FOR EACH STATEMENT EXECUTE PROCEDURE notify_scheduled_roasts_changed()");
             query.exec("UPDATE TypicaFeatures SET version = 8 WHERE feature = 'base-features'");
             query = query.invalidate();
         };
 			}
 			query = query.invalidate();
 		}
-		
 		var switchuser = findChildObject(this, 'switchuser');
 		switchuser.triggered.connect(function() {
 			var loginDialog = new LoginDialog();