[TEAMMATES#11867] Update developers.json

[TEAMMATES#11794] Update help pages (TEAMMATES#11829)

Update developers.json

[TEAMMATES#11773] Update developers

[TEAMMATES#11751] Deadline extensions in FeedbackSession entity have …

…unnecessary constraint (TEAMMATES#11752)

[TEAMMATES#11727] Update developers.json with new contributors and co…

…mmitters

[TEAMMATES#11715] Selective Deadline Extension - Error in getting dea…

…dline extension entities possibly needing closing email (TEAMMATES#11716)

[TEAMMATES#11362] [TEAMMATES#11617] Use course institute fully for di…

…splays + to determine whether account can create course (TEAMMATES#11654)

* Use course as the source of institute instead of account

* Remove institute information from footer

* Remove account institute information in admin account page

* Display course institute information in admin account page

* Display course institute in instructor/student course details page

* Extend GetCourseAction to be accessible by unregistered users

* Display course institute in session submission/results page

* Remove institute from account entity

* Check for institute validity when creating course

* Remove account isInstructor information in admin account page

* Remove function to downgrade instructor in admin accounts page

* Remove isInstructor from account entity

* Remove unused createAtTimestamp for account output

[TEAMMATES#11693] Student submitting MCQ question: comments are not l…

…oading (TEAMMATES#11699)

[TEAMMATES#11673] Add ESLint rule for member delimiter style (TEAMMAT…

…ES#11675)