[$75] Update phase starts as end date is updated

[jmgasper]

Expected behavior

When updating the end date of a phase, all subsequent phases need to update accordingly, to ensure that no subsequent phase starts before the end of the previous phase.

Screenshot/screencast

[maxceem]

Challenge https://www.topcoder.com/challenges/92c21eba-c6df-4d99-ad51-f8dddbf9363f has been created for this ticket.

This is an automated message for maxceem via Topcoder X

[maxceem]

Challenge https://www.topcoder.com/challenges/92c21eba-c6df-4d99-ad51-f8dddbf9363f has been assigned to nursoltan-s.

This is an automated message for maxceem via Topcoder X

[nursoltan-s]

Hi,
@jmgasper Can you please check this PR? Thanks
#1333

[jmgasper]

Looks good, thanks.

[maxceem]

Payment task has been updated: https://www.topcoder.com/challenges/92c21eba-c6df-4d99-ad51-f8dddbf9363f
Payments Complete
Winner: nursoltan-s
Challenge 92c21eba-c6df-4d99-ad51-f8dddbf9363f has been paid and closed.

This is an automated message for maxceem via Topcoder X

[sdgun]

Verified in production.