Fix missing or_ import

cps/web.py

@@ -31,7 +31,7 @@ from flask_babel import gettext as _
 from flask_babel import get_locale
 from flask_login import login_user, logout_user, login_required, current_user
 from sqlalchemy.exc import IntegrityError, InvalidRequestError, OperationalError
-from sqlalchemy.sql.expression import text, func, false, not_, and_
+from sqlalchemy.sql.expression import text, func, false, not_, and_, or_
 from sqlalchemy.orm.attributes import flag_modified
 from sqlalchemy.sql.functions import coalesce