New tests

hivemind/tavern/condenser_api_patterns/get_discussions_by_feed/bartcant.orig.json

+Check `readme.txt` first
+
+post_id  author           permlink                                                                                        
+-------  ---------------  ------------------------------------------------------------------------------------------------
+
+
+
+The result is empty, because the account `jamesc` hasn't any reblog. The clause `HAVING` excludes whole result,
+because doesn't exist any feed for any followings and for ["gavvet","telescopic-tour-featuring-luision-as-author"].