Fix backend bulk delete, separate password page, remove admin dummy data, swap dashboard rows

backend/main.py

@@ -298,8 +298,8 @@ def bulk_delete_students(payload: DeleteUsersRequest, session: Session = Depends
         user = session.get(models.User, uid)
         if user:
             # Delete associated records manually since foreign key cascade might not be configured in sqlmodel by default
-            session.exec(delete(models.Attempt).where(models.Attempt.user_id == uid))
             session.exec(delete(models.Mistake).where(models.Mistake.user_id == uid))
+            session.exec(delete(models.Attempt).where(models.Attempt.user_id == uid))
             session.exec(delete(models.Transaction).where(models.Transaction.user_id == uid))
             session.exec(delete(models.Subscription).where(models.Subscription.user_id == uid))
             session.exec(delete(models.StudyPlan).where(models.StudyPlan.user_id == uid))