fix team free shift sorting

shiftregister/team/views.py

@@ -139,7 +139,11 @@ class FreeShiftList(ShiftList):
         help_wanted = Q(required_helpers__gt=F("reg_count")) | Q(
             required_helpers=0
         ) & Q(room__required_helpers__gt=F("reg_count"))
-        return Shift.with_reg_count().filter(
-            help_wanted,
-            start_at__gt=timezone.now(),
+        return (
+            Shift.with_reg_count()
+            .filter(
+                help_wanted,
+                start_at__gt=timezone.now(),
+            )
+            .order_by("start_at", "room_id")
         )