Status propogation

[rb004f]

We need an implementation of status propagation between infrastructure systems. For example, if a PowerModels generator status = 0, PowerModels will remove the generator from ref. However, a GasModels receipt point might point at that generator as a consumer of gas. Given that the generator is removed, this will result in a dangling data pointer. So, we need to make this receipt status = 0 as well. This might require manual execution of the correct_network functions in GasModels and PowerModels