(core) Add attachment and data size usage

Summary:
Adds attachment and data size to the usage section of
the raw data page. Also makes in-document usage banners
update as user actions are applied, causing them to be
hidden/shown or updated based on the current state of
the document.

Test Plan: Browser tests.

Reviewers: jarek

Reviewed By: jarek

Subscribers: alexmojaki

Differential Revision: https://phab.getgrist.com/D3395

test/server/lib/DocApi.ts

@@ -1725,7 +1725,7 @@ function testDocApi() {
       assert.equal(resp.status, 200);
 
       // Remove the not expired attachments (2 and 3).
-      // We didn't set a timeDeleted for 3, but it gets set automatically by updateUsedAttachments.
+      // We didn't set a timeDeleted for 3, but it gets set automatically by updateUsedAttachmentsIfNeeded.
       resp = await axios.post(`${docUrl}/attachments/removeUnused?verifyfiles=1`, null, chimpy);
       assert.equal(resp.status, 200);
       await checkAttachmentIds([]);