Moved login condition out of Trait

[SwarajKR]

No description provided.

[akhilerm]

After moving the login condition, the login is working as expected.

[akhilerm]

Not working as expected. can still access another user's file

[akhilerm]

In fbe4169 user can't cd into another user's directory. Enforced by calculating levels of directory. But if the user is in a question directory cd ../question_name will give output as No such directory

[SwarajKR]

in cd path should be calculated as following.
$user_dir should be pwd (execute shell command/use previous pwd)
concat it with $args[0]
session - pwd should be new dir - user's home