Minor bug fix in Reset Lesson

Signed-off-by: Shivam Dixit <shivamd001@gmail.com>
Added getHints, addErrorMessage in BaseLesson

Signed-off-by: Shivam Dixit <shivamd001@gmail.com>
Changed lessons according to new BaseLesson

Signed-off-by: Shivam Dixit <shivamd001@gmail.com>
Added lesson Bypass Business Layer Access Control

Signed-off-by: Shivam Dixit <shivamd001@gmail.com>