feat: Collection admins (#5273

* Split permissions for reading documents from updating collection

* fix: Admins should have collection read permission, tests

* tsc

* Add admin option to permission selector

* Combine publish and create permissions, update -> createDocuments where appropriate

* Plural -> singular

* wip

* Quick version of collection structure loading, will revisit

* Remove documentIds method

* stash

* fixing tests to account for admin creation

* Add self-hosted migration

* fix: Allow groups to have admin permission

* Prefetch collection documents

* fix: Document explorer (move/publish) not working with async documents

* fix: Cannot re-parent document to collection by drag and drop

* fix: Cannot drag to import into collection item without admin permission

* Remove unused isEditor getter

app/models/BaseModel.ts

@@ -60,7 +60,6 @@ export default abstract class BaseModel {
   };
 
   updateFromJson = (data: any) => {
-    // const isNew = !data.id && !this.id && this.isNew;
     set(this, { ...data, isNew: false });
     this.persistedAttributes = this.toAPI();
   };