[OutputBuilder] WIP: Enable display of rule RHS data received from server.
[OutputBuilder] WIP: Enable display of rule RHS data received from
server.

2. Set correct `urlRoot` when creating instances of CombinationGroup,
   OutputString, Slot, and Part models.

itsjeyd/ODE,itsjeyd/ODE,itsjeyd/ODE,itsjeyd/ODE