Merge branch 'add_reply_time' into 'master'

update

See merge request alpha/physical!399

libs/es.py

@@ -415,7 +415,7 @@ class ESPerform(object):
                 },
                 "sort": [
                     {"_score": {"order": "desc"}},
-                    # {"latest_reply_time":{"order": "desc"}},
+                    {"latest_reply_time":{"order": "desc"}},
                     {"create_time_val": {"order": "desc"}},
                     {"language_type": {"order": "asc"}},
                 ],