add User, Role, Permission models
made delete static again. made save not static.
made delete static again. made save not static.
Update answer.php
Update course.php
Update question.php
Update useranswer.php
Update userquestion.php
Fix Permission save
Create basic template
Add phpcas initialization to every page
Remove database tweak to use PDO
Rename cas controller to baseController.
Add PDO database handling in baseController
Create quizzes.php
Created models for Quiz and QuizSession
Removed unnecessary comments
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