Properly set ignore flag on check

trans/views/js.py

@@ -150,11 +150,7 @@ def ignore_check(request, check_id):
     obj = get_object_or_404(Check, pk=int(check_id))
     obj.project.check_acl(request)
     # Mark check for ignoring
-    obj.ignore = True
-    obj.save()
-    # Invalidate caches
-    for unit in Unit.objects.filter(checksum=obj.checksum):
-        unit.translation.invalidate_cache()
+    obj.set_ignore()
     # response for AJAX
     return HttpResponse('ok')