Archive old migrations (#426)

* Archive old migrations

* Fix invalid placement of migrations

migrations/archive/000.011.sql

@@ -0,0 +1,10 @@
+-- General change: Adding a PK to inquiry_markers table
+DO $$
+    BEGIN
+        BEGIN
+            ALTER TABLE inquiry_markers ADD PRIMARY KEY (id);
+        EXCEPTION
+            WHEN invalid_table_definition THEN RAISE NOTICE 'primary key for id already exists in inquiry_markers.';
+        END;
+    END;
+    $$