--- alter-project-options-add-scale
ALTER TABLE project_options ADD rating_scale_to INT DEFAULT NULL;
ALTER TABLE project_options ADD rating_scale_from INT DEFAULT NULL;
ALTER TABLE project_options ADD good_scale_from INT DEFAULT NULL;
ALTER TABLE project_options ADD good_scale_to INT DEFAULT NULL;
ALTER TABLE project_options ADD bad_scale_from INT DEFAULT NULL;
ALTER TABLE project_options ADD bad_scale_to INT DEFAULT NULL;