EDT Submission timestamp is reflecting on online review

[ajaysaini9782]

Describe the bug
Submission timestamp is incorrect time on online review page.

Challenge submitted timestamp was 07.11.2019 11:31 UTC and same submission timestamp is reflecting on online review page, (without any timezone conversion logic).

Expected behavior
The functionality of online review page based on EST time zone because of this, reviewers are facing issue in closing the challenge review phase.
Challenge submission timestamp should be in EST time on online review page.

Example : As per above screenshot, actual submission timestamp was 07.11.2019 11:31 EDT.
Online review submission timestamp should be 07.11.2019 07:31 EST.

[RiteshTC]

cc @adroc-tc, @dushyantb

[bountyC0d3r]

@RiteshTC working on this; planning to apply the patch tomorrow morning