am e721f9df: am d7026f7a: add new script to toggle visibility of nested list items. call hideNestedItems(), giving it the parent list to toggle and the <a> element that performs the toggle

* commit 'e721f9df243534ca4b414641c109db3a24d36357':
  add new script to toggle visibility of nested list items. call hideNestedItems(), giving it the parent list to toggle and the <a> element that performs the toggle