Updates database query to use 'quiz_slots' instead of
'quiz_question_instances' to fetch quiz questions. This
change ensures compatibility with updated database schema
and correct data retrieval process.
Extracts and refactors user selection logic by moving user selector
and form functionality into separate class files. This enhances code
modularity and reusability across different parts of the application.
Adds a detailed user grades report page that displays quiz attempts
and grades for selected users, improving user grade reporting.
Updates admin settings to include detailed report page link for
navigation ease.
