feat: Add board setting to expand task lists by default

Closes #683, closes #1333

client/src/models/Board.js

@@ -31,6 +31,7 @@ export default class extends BaseModel {
     defaultCardType: attr(),
     limitCardTypesToDefaultOne: attr(),
     alwaysDisplayCardCreator: attr(),
+    expandTaskListsByDefault: attr(),
     context: attr(),
     view: attr(),
     search: attr(),