Fixed minor bug
Changed how the lesson name is extracted from the
relative request path.

Signed-off-by: Shivam Dixit <shivamd001@gmail.com>
Added lesson Forced Browsing

Signed-off-by: Shivam Dixit <shivamd001@gmail.com>
Added lesson Encoding Basics

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