P5-6095 replace market with market_locale for articles_content (#149)

migrations/000.299.sql

@@ -0,0 +1,26 @@
+-- P5-6095: articles content should belong to a market_locale
+
+alter table article_content
+    add column market_locale_id integer;
+
+
+alter table article_content
+    add constraint market_locales_fkey
+    foreign key (market_locale_id)
+    references market_locales(id) match simple;
+
+
+alter table article_content
+    add unique (article_id, market_locale_id);
+
+
+update article_content
+    set market_locale_id = (select id from market_locales where market_id = article_content.market_id);
+
+
+alter table article_content
+    alter column market_locale_id set not null;
+
+
+alter table article_content
+    drop column market_id;