Fixed StudentModule conflicting path

[AhtishamShahid]

PROD-1295

Issue: People were unable to download poll reports due to conflict in StudentModule

Fix: Updated StudentModule path and there was another issue with the concatenation of the list which seems likely was caused due to python update.

[Agrendalath]

@AhtishamShahid, please rebase this on the current master branch to fix the failing tests.

[AhtishamShahid]

@AhtishamShahid, please rebase this on the current master branch to fix the failing tests.

@Agrendalath I have rebased with master Please review and merge the PR.

[Agrendalath]

@AhtishamShahid, I'm actually not the reviewer here, just wanted to point the way of fixing tests. cc: @xitij2000

[AhtishamShahid]

@xitij2000 Please review and merge this PR.

[toxinu]

👍

• [x] I tested this: check that the xBlock is working properly on devstack
• [x] I read through the code
• ~I checked for accessibility issues~
  • ~Includes documentation~

[toxinu]

Thanks for your contribution @AhtishamShahid! 👍