Step Editor: title is now updated when using copy & paste

HTML content: embedded content in iframes are now displayed responsively again (100% width)

Document viewer: content is now fully visible again

Login with OpenID: added debugging for "Invalid token claim: aud" error

Trial domain creation now works again (incl fix 404 /home)

OpenID for CERES should work again (fixed "Invalid claim: aud" error)

Users with roles Author+Auditor+Assistant don't see course steps

ToC: comment count is not updated after deleting a comment

Step Navigation was not moved to the correct position after content size was (un)set to "full page"