Move data queries to the host-server and reduce client queries to a single endpoint on the host-server

[sbuggay]

Right now the client polls each individual data-server. Which causes more load on the client as well as exposes data-server endpoints.

The goal is to give the host-server more to do than just serve up the client.

• [x] Move data queries to host-server
• [x] Update client to only poll host-server
• [ ] Use websockets