(core) Add document usage banners

Summary:
This also enables the new Usage section for all sites. Currently,
it shows metrics for document row count, but only if the user
has full document read access. Otherwise, a message about
insufficient access is shown.

Test Plan: Browser tests.

Reviewers: jarek

Reviewed By: jarek

Subscribers: alexmojaki

Differential Revision: https://phab.getgrist.com/D3377

app/server/lib/DocManager.ts

@@ -318,7 +318,7 @@ export class DocManager extends EventEmitter {
         activeDoc.getRecentMinimalActions(docSession),
         activeDoc.getUserOverride(docSession),
         activeDoc.getRowCount(docSession),
-        activeDoc.getDataLimitStatus(),
+        activeDoc.getDataLimitStatus(docSession),
       ]);
 
       const result = {