Collection of small ARIA bugs

Setup Using Chrome, install the 'Axe' tool from https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd Install a new default site from scratch, without any previous customization or configuration. Create a forum in a course, and enable Whole forum grading on it NOTES There are some consistent failures to be aware of. These will be fixed in a separate issue and do not consitute a failure here. There are: " Main landmark must not be contained in another landmark " " All page content must be contained by landmarks " " Elements must have sufficient color contrast " " Heading levels should only increase by one " These are a bit of a pain to solve and will not be addressed by this issue. Test Navigate tot he forum Open your Developer tools and choose the "axe" tab (You may need to click it's logo in the toolbar beside the URL the first time) Click "Analyze" Confirm that the only issues shown were the ones noted above Click on the "Add a new discussion topic" button In "Axe" click "Run again" Confirm that the only issues shown were the ones noted above Enter a subject and message and "Post to forum" Analyze in Axe and confirm that the only issues shown were the ones noted above Open the "..." menu for the post you just created Analyze in Axe and confirm that the only issues shown were the ones noted above Pin, Lock, and Star the discussion Analyze in Axe and confirm that the only issues shown were the ones noted above Unpin, Unlock, and Unstar the discussion View the discussion Post two replies to it Post a reply to the first reply Refresh the page Analyze in Axe and confirm that the only issues shown were the ones noted above Open the "..." menu Analyze in Axe and confirm that the only issues shown were the ones noted above Switch display mode to " Display replies flat, with oldest first " Analyze in Axe and confirm that the only issues shown were the ones noted above Switch display mode to " Display replies flat, with newest first " Analyze in Axe and confirm that the only issues shown were the ones noted above Switch display mode to " Display replies in threaded form " Analyze in Axe and confirm that the only issues shown were the ones noted above Switch display mode to " Display replies in nested form " Analyze in Axe and confirm that the only issues shown were the ones noted above For 38 and master only Open User menu -> Preferences -> Forum preferences Set " Use experimental nested discussion view " to "Yes" Go back to the forum Switch display mode to " Display eplies in experimental nested form " Analyze in Axe and confirm that the only issues shown were the ones noted above Open the "..." menu Analyze in Axe and confirm that the only issues shown were the ones noted above Close the "..." menu Open the "Cog" menu at the top right (Settings) Analyze in Axe and confirm that the only issues shown were the ones noted above Go back to the list of discussions Click "Grade users" Analyze in Axe and confirm that the only issues shown were the ones noted above and... "IDs of active elements must be unique" "IDs used in ARIA and labels must be unique"