46ea75aca3
This includes the following commits: *dd834cbMDL-38661 JavaScript: Add missing lazy loading on collapseall *4dab1c3MDL-38661 JavaScript: Ensure that ARIA tags are set when expanding/collapsing content *1574e65MDL-38661: Add keyboard support for expansion *3df632fMDL-38661 Add pointer cursor to clickable collapse/expand icons *53c1b93MDL-38661 Course: Add JS category expander.