Rock name ID, and / or discriminate or filter rocks for scenario dropdowns

[EvanBianco]

We need a way to filter or annotate the rock names in the dropdown selector for scenarios and the model building. If I, say, have a rock called "Shale" in "My Rock", and rock called "Shale" in "Public Rocks", then there is no way to tell them apart other than inferring from their order in the list.

Another thing to do would be to have a staging area of a scenario specific set list of rocks, to better categorize rocks during the workflow.