Milestone M30 updates

Let's go through what we did in Milestone M30 (Feb 10 - Feb 23).

Bug fixes

• Fixed a page crash issue when admin tries to login to an assessment through the public link.

• Cloning an assessment did not preserve the order of questions. This has been fixed.

• Fixed a bug where the dates of a draft assessment with past date could not be published after changing the dates.

• Fixed a bug where an assessment could not be published if the inputs of two test cases are swapped.