add valid roles

client/src/Utils/roleUtils.js

@@ -5,6 +5,8 @@ export const ROLES = {
 	DEMO: "demo",
 };
 
+export const VALID_ROLES = [ROLES.ADMIN, ROLES.USER, ROLES.DEMO];
+
 export const EDITABLE_ROLES = [
 	{ role: ROLES.ADMIN, _id: ROLES.ADMIN },
 	{ role: ROLES.USER, _id: ROLES.USER },