A shopping cart to temporarily store entities while browsing in Aleph

[sunu]

We can build a “shopping cart” into Aleph as a temporary place to store entities of interest while browsing around in Aleph.

There can be multiple ways to add entities into the cart - from search result page, from collection browsing page.
There can be multiple ways to “check out” the entities in cart - import them into a network diagram, import them into a personal collection, create a curated “entities of interest” set out of it to share with fellow journalists, export as excel sheet etc

The cart can possibly be only a frontend feature that is tied to a session. Or we can model it with “Sets” on the backend. Sets will have the same import/export functionality implemented. And a user’s cart will simply be a special set tied to that user.