fix(challenge-listing): sorting functions

Fix for MOST_RECENT, TIME_TO_REGISTER and TIME_TO_SUBMIT sortings.
  * Since the V5 API  returns inconistent values for
    (`registrationStartDate`, `registrationEndDate`, `submissionStartDate`, `submissionEndDate`),
    these dates will now be extracted from `challenge.phases` array.

Reference topcoder-platform#4715, topcoder-platform#4716

Author: cagdas001

src/shared/utils/challenge-listing/sort.js

@@ -3,7 +3,7 @@
  */
 
 import moment from 'moment';
-import { sumBy } from 'lodash';
+import { find, sumBy } from 'lodash';
 
 export const SORTS = {
   CURRENT_PHASE: 'current-phase',
@@ -25,7 +25,15 @@ export default {
     name: 'Current phase',
   },
   [SORTS.MOST_RECENT]: {
-    func: (a, b) => moment(b.registrationStartDate).diff(a.registrationStartDate),
+    func: (a, b) => {
+      const getRegistrationStartDate = (challenge) => {
+        const registrationPhase = find(challenge.phases, p => p.name === 'Registration');
+        return registrationPhase.actualStartDate || registrationPhase.scheduledStartDate;
+      };
+      const aRegistrationStartDate = getRegistrationStartDate(a);
+      const bRegistrationStartDate = getRegistrationStartDate(b);
+      return moment(bRegistrationStartDate).diff(aRegistrationStartDate);
+    },
     name: 'Most recent',
   },
   [SORTS.NUM_REGISTRANTS]: {
@@ -42,8 +50,13 @@ export default {
   },
   [SORTS.TIME_TO_REGISTER]: {
     func: (a, b) => {
-      const aDate = moment(a.registrationEndDate || a.submissionEndTimestamp);
-      const bDate = moment(b.registrationEndDate || b.submissionEndTimestamp);
+      const getRegistrationEndDate = (challenge) => {
+        const registrationPhase = find(challenge.phases, p => p.name === 'Registration');
+        return registrationPhase.actualEndDate || registrationPhase.scheduledEndDate;
+      };
+
+      const aDate = moment(getRegistrationEndDate(a) || a.submissionEndTimestamp);
+      const bDate = moment(getRegistrationEndDate(b) || b.submissionEndTimestamp);
 
       if (aDate.isBefore() && bDate.isAfter()) return 1;
       if (aDate.isAfter() && bDate.isBefore()) return -1;