Archive old migrations (#426)

* Archive old migrations

* Fix invalid placement of migrations

migrations/archive/000.420.sql

@@ -0,0 +1,14 @@
+-- Recreate v_esales_product_categories as a regular view
+
+-- Below is output of \d+ v_esales_product_categories
+CREATE VIEW v_esales_product_categories_unmaterialized AS
+SELECT DISTINCT tree.id,
+                tree.locale_id,
+                getsafexmlpath(tree.path::character varying, 2) AS path,
+                category_texts.name,
+                product_category.product_id
+FROM product_category
+         JOIN categories ON product_category.category_id = categories.id
+         JOIN categories hidden_category ON hidden_category.name::text = 'hidden'::text
+         JOIN v_esales_categorytree_i18n tree ON (tree.lft < categories.lft AND tree.rgt > categories.rgt OR categories.id = tree.id) AND tree.id <> 1 AND (tree.lft < hidden_category.lft OR tree.lft > hidden_category.rgt)
+         JOIN category_texts ON tree.id = category_texts.category_id AND tree.locale_id = category_texts.locale_id;