Run free compute on OPF nodes

[mihaisc]

Initially free compute will be ran on OPF nodes on p2p. It will be more consistent and easier to debug.

[jamiehewitt15]

Initially free compute will be ran on OPF nodes

Ok, so currently it's set up to allow them to choose the node where they want to run it (and they can input whatever they want). It might make sense to remove that selector to simplify the UI, and then we just randomly select one of the OPF nodes to run it on, to distribute the load.