Add Dataloader on a per-request chaching basis

[nikgraf]

No description provided.

[sid88in]

something to look at - prefetching dev.apollodata.com/react/prefetching.html

todo: research on prefetching and dataloader (same or totally different concepts)

[nikgraf]

It's quite different. Dataloader helps to avoid duplicated request

For example when fetching a list of projects with the author the author could be the same. Instead of doing 10 requests to fetch the author with dataloader we can make sure to fetch only one. In fact dataloader will fetch all the authors and properly inject them to the right project.