New: Book editor on author details page

frontend/src/Book/Editor/BookEditorFooterLabel.js

@@ -0,0 +1,40 @@
+import PropTypes from 'prop-types';
+import React from 'react';
+import SpinnerIcon from 'Components/SpinnerIcon';
+import { icons } from 'Helpers/Props';
+import styles from './BookEditorFooterLabel.css';
+
+function BookEditorFooterLabel(props) {
+  const {
+    className,
+    label,
+    isSaving
+  } = props;
+
+  return (
+    <div className={className}>
+      {label}
+
+      {
+        isSaving &&
+          <SpinnerIcon
+            className={styles.savingIcon}
+            name={icons.SPINNER}
+            isSpinning={true}
+          />
+      }
+    </div>
+  );
+}
+
+BookEditorFooterLabel.propTypes = {
+  className: PropTypes.string.isRequired,
+  label: PropTypes.string.isRequired,
+  isSaving: PropTypes.bool.isRequired
+};
+
+BookEditorFooterLabel.defaultProps = {
+  className: styles.label
+};
+
+export default BookEditorFooterLabel;