Currently, on a collection page there is no indication of the total number of entities in that collection (see attached screenshot), while the number is shown on the page showing all collections.

For this task, you will need to see how the collections are loaded for the /collections page (https://github.com/bookbrainz/bookbrainz-site/blob/master/src/server/routes/collections.js#L37) and what is missing to load the entity count for the /collection/

page (https://github.com/bookbrainz/bookbrainz-site/blob/master/src/server/routes/collection.js#L120)