Merge branch 'hk' into 'test'

update

See merge request alpha/physical!357

search/utils/topic.py

@@ -375,7 +375,8 @@ class TopicUtils(object):
                                 "must": [
                                     {"term": {"is_online": True}},
                                     {"term": {"is_deleted": False}},
-                                    {"terms": {"tag_list": useful_tag_list}}
+                                    {"terms": {"tag_list": useful_tag_list}},
+                                    {"term":{"content_level":6}}
                                 ],
                                 "must_not": {
                                     "terms": {