Added some functions for managing uncertainty models in the session.
- Water object has some new content in its payload.
- Location view needs to filter some builtin objects when deciding to recurse.
- step view needs to check for Weathering output before treating it.
Updated the payload for the model run tests.
Added multi model broadcaster to model creation and object updates.
Upon model creation or update, create the adios uncertainty runs only if the model has weathering.
in-progress: When we update an object, we check to see if the object is contained inside a model and if the model is a weathering model, we re-establish our weathering uncertainty models.
Added the uncertainty model runs to the /step method.
If weathering is removed from a model, then adios uncertainty runs should go away.