Add step to rewards.rewardpointredemptionevent in testdata (#2382)

in #2264 the step field was added to rewards.rewardpointredemptionevent but not reflected in the test_data.json.

It is now added :)

Author: jooooosef

evap/development/fixtures/test_data.json

@@ -153476,7 +153476,8 @@
   "fields": {
     "name": "Big party",
     "date": "2099-12-31",
-    "redeem_end_date": "2099-12-30"
+    "redeem_end_date": "2099-12-30",
+    "step": 3
   }
 },
 {

evap/rewards/models.py

@@ -11,6 +11,7 @@ class RewardPointRedemptionEvent(models.Model):
     name = models.CharField(max_length=1024, verbose_name=_("event name"))
     date = models.DateField(verbose_name=_("event date"))
     redeem_end_date = models.DateField(verbose_name=_("redemption end date"))
+    # Note that we allow this value to change throughout the lifetime of the event.
     step = models.PositiveSmallIntegerField(
         verbose_name=_("redemption step"), help_text=_("Only multiples of this step can be redeemed."), default=1
     )