perf: Move collection sorting to frontend (#3475)

* perf: Move collection sorting to frontend, on demand, memoized

* fix: Add default

server/migrations/20220430043135-collection-sort-backfill.js

@@ -0,0 +1,29 @@
+'use strict';
+
+module.exports = {
+  up: async (queryInterface) => {
+    let again = 1;
+  
+    while (again) {
+      console.log("Backfilling collection sort…");
+      const [, metadata] = await queryInterface.sequelize.query(`
+WITH rows AS (
+  SELECT id FROM collections WHERE "sort" IS NULL ORDER BY id LIMIT 1000
+)
+UPDATE collections
+SET "sort" = :sort::jsonb
+WHERE EXISTS (SELECT * FROM rows WHERE collections.id = rows.id)
+  `, {
+        replacements: {
+          sort: JSON.stringify({ field: "title", direction: "asc" }),
+        }
+      });
+
+      again = metadata.rowCount;
+    }
+  },
+
+  down: async () => {
+    // cannot be undone
+  }
+};