Stalled Challenge phase

[SathyaJayabal]

When the submission phase ends and the review phase does not open automatically, the challenge is displayed with as submission late phase in V4 and Stalled state in V5.

example:https://beta-community-app.topcoder.com/challenges/ca14c0f3-b29e-4826-a6bb-560d8448cd9b
https://www.topcoder.com/challenges/30132551

cc @sushilshinde