Add notification to user to add accessible namespaces (#2173)

src/renderer/components/layout/sub-title.tsx

@@ -6,19 +6,18 @@ interface Props {
   className?: string;
   title: React.ReactNode;
   compact?: boolean; // no bottom padding
+  id?: string;
 }
 
 export class SubTitle extends React.Component<Props> {
   render() {
-    const { compact, title, children } = this.props;
-    let { className } = this.props;
-
-    className = cssNames("SubTitle", className, {
+    const { className, compact, title, children, id } = this.props;
+    const classNames = cssNames("SubTitle", className, {
       compact,
     });
 
     return (
-      <div className={className}>
+      <div className={classNames} id={id}>
         {title} {children}
       </div>
     );