Merge pull request frontend-collective#77 from matheusmatos/master

Explicit button type to prevent form submit

Author: fritz-c

src/node-renderer-default.js

@@ -84,6 +84,7 @@ class NodeRendererDefault extends Component {
                 {toggleChildrenVisibility && node.children && node.children.length > 0 && (
                     <div>
                         <button
+                            type="button"
                             aria-label={node.expanded ? 'Collapse' : 'Expand'}
                             className={node.expanded ? styles.collapseButton : styles.expandButton}
                             style={{ left: -0.5 * scaffoldBlockPxWidth }}