feat: Add ability to enforce SSO

Closes #543, closes #545

client/src/containers/LoginContainer.js

@@ -20,6 +20,7 @@ const mapStateToProps = (state) => {
     isSubmittingUsingOidc,
     error,
     withOidc: !!oidcConfig,
+    isOidcEnforced: oidcConfig && oidcConfig.isEnforced,
   };
 };