Next Phase and Contest deadlines are incorrect on challenge details

Next Phase and Contest deadlines are incorrect on challenge details examples https://beta-community-app.topcoder.com/challenges/934bb8ac-1269-469b-a1b8-64b6443a6f9f https://www.topcoder.com/challenges/30136288 <img width="1440" alt="Screenshot 2020-08-07 at 1 57 48 PM" src="https://user-images.githubusercontent.com/58783823/89626030-66e2ab80-d8b6-11ea-8ed4-1fdce20f208b.png">

Final Submission Guidelines

Git issue link: https://github.com/topcoder-platform/community-app/issues/4723