Fix membership tables for clubs without an ending membership date

Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>

apps/member/models.py

@@ -258,7 +258,7 @@ class Club(models.Model):
         This function is called each time the club detail view is displayed.
         Update the year of the membership dates.
         """
-        if not self.membership_start:
+        if not self.membership_start or not self.membership_end:
             return
 
         today = datetime.date.today()

apps/member/tables.py

@@ -120,7 +120,7 @@ class MembershipTable(tables.Table):
                     club=record.club,
                     user=record.user,
                     date_start__gte=record.club.membership_start,
-                    date_end__lte=record.club.membership_end,
+                    date_end__lte=record.club.membership_end or date(9999, 12, 31),
             ).exists():  # If the renew is not yet performed
                 empty_membership = Membership(
                     club=record.club,