Added voucher creation date display in voucher edit view.

lostplaces/lostplaces_app/admin.py

@@ -18,7 +18,11 @@ class ExplorerAdmin(UserAdmin):
     model = Explorer
     list_display = ['email', 'username',]
 
+class VoucherAdmin(admin.ModelAdmin):
+    fields = ['code', 'expires', 'created']
+    readonly_fields = ['created']
+
 admin.site.register(Explorer, ExplorerAdmin)
-admin.site.register(Voucher)
+admin.site.register(Voucher, VoucherAdmin)
 admin.site.register(Place)
 admin.site.register(PlaceImage)

lostplaces/lostplaces_app/models.py

@@ -26,7 +26,7 @@ class Voucher(models.Model):
     """
     Vouchers are authorization tokens to allow the registration of new users.
     A voucher has a code, a creation and a deletion date, which are all positional.
-    Creation date is being set automatically during voucher creation.
+    Creation date is being set automatically during voucher creation. 
     """
 
     code = models.CharField(unique=True, max_length=10)