Get Actors count.

[DusX]

I would like to be able to right click and select 'actor count' and see how many times the actor is used in file.
Further, if we could view print and list of the paths to locate all the instances.. eg root->MixerActor->Crossfade->ActorInstance

Later
This could be very helpful, and later may be useful in extending to a debugger system, where on error you can see the path to the at fault actor?? Maybe directly open it?