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/menus/CollectionMenu.tsx

@@ -200,14 +200,14 @@ function CollectionMenu({
       {
         type: "button",
         title: t("New document"),
-        visible: can.update,
+        visible: can.createDocument,
         onClick: handleNewDocument,
         icon: <NewDocumentIcon />,
       },
       {
         type: "button",
         title: t("Import document"),
-        visible: can.update,
+        visible: can.createDocument,
         onClick: handleImportDocument,
         icon: <ImportIcon />,
       },
@@ -261,6 +261,7 @@ function CollectionMenu({
       collection,
       can.unstar,
       can.star,
+      can.createDocument,
       can.update,
       can.delete,
       handleStar,