Feature: Added sale voucher to check sale import.

Chore: Frontend moved from Moment to date-fns and from dd-MMM-yyyy to ISO Date format.

overlord/src/app/app.environment.ts

@@ -6,12 +6,12 @@ export const environment = {
 
 export const dateFormat = {
   parse: {
-    dateInput: 'DD-MMM-YYYY',
+    dateInput: ['dd-MMM-yyyy', 'dd/MM/yyyy', 'dd-MM-yyyy', 'yyyy-MM-dd'],
   },
   display: {
-    dateInput: 'DD-MMM-YYYY',
-    monthYearLabel: 'MMM YYYY',
-    dateA11yLabel: 'DD-MMM-YYYY',
-    monthYearA11yLabel: 'MMM YYYY',
+    dateInput: 'dd-MMM-yyyy',
+    monthYearLabel: 'MMM yyyy',
+    dateA11yLabel: 'dd-MMM-yyyy',
+    monthYearA11yLabel: 'MMMM yyyy',
   },
 };