samigo: If user time zone differs from server time zone, available/due/late dates set incorrectly on edit > save

Verified on 19x: https://qa19-mysql.nightly.sakaiproject.org/, build: 521fbb94 following test plan

Verified on 20x: https://qa20-mysql.nightly.sakaiproject.org/, build: 867ff688 using the test plan

Created  for the problem noted.

I retested on: https://trunk-mysql.nightly.sakaiproject.org/portal/

But I'm still seeing the incorrect time when using the settings I mentioned in my previous comment where the user's OS time and preference are different

I'm not sure if that would be related to this issue or SAK-42812, but I'll add a comment to as well. Or should open a new JIRA?

Here's the procedure I used:

1. https://trunk-mysql.nightly.sakaiproject.org/portal/

2. Log in as instructor, go to Home > Preferences > Time Zone and set your time zone to be the same as the server time: US/Eastern

3. Set your local computer's operating system's time to something other than US/Eastern (I used US/Hawaii)

4. Create a site with Tests & Quizzes.

5. Create a quiz with at least one question.

6. Edit Settings on the quiz and set the start date, due date, late submissions, etc. then Save.

7. The time on the assignments list page does not reflect what was entered on the edit page

8. Edit the quiz again.

9. The time in the input fields have changed.

10. don't modify anything, but re-save

11. The time on the assignments list page changes again

12. Edit the quiz again

13. The time in the input fields have changed again.

I think this is a common scenario where normally, all three timezones: server, preferences, OS are the same so normally the times are fine, but then the instructor might travel to another timezone and his or her OS timezone automatically changes. Then they attempt to edit a Quiz and without even touching the dates, the dates end up changing.

Verified on 21x: https://trunk-mysql.nightly.sakaiproject.org/, build: 80a7128e that if the instructor is in a different time zone, saving the quiz multiple times (as in Tiffany's video) does not change the time zone. I will set this to verified since the times do not change on edit/save.

There is another issue, (thanks for the videos ), if the user's timezone in Sakai and the computer match, (I used 2 different computers to make sure that the student was in eastern time for Sakai and the computer and the instructor was on mountain time for Sakai and the computer), the instructor is seeing the correct time when creating the quiz, but when publishing, it shows the server time. Created