P5-5329: clean up articles table after styla migration

migrations/000.200.sql

@@ -0,0 +1,7 @@
+-- P5-5329: clean up articles table after styla migration
+
+-- fix broken name
+update articles set name = '"Brokiga" at Photowall' where name = '"""Brokiga"" at Photowall"';
+
+-- remove duplicate rows
+DELETE FROM articles a USING articles b WHERE a.id < b.id AND (a.name = b.name and a.published = b.published);