Handle actions that rely on websocket response data

[Caleb-Ellis]

Examples to handle:

• Create a new resource pool and then set a machine to that resource pool
• Create a new tag and then assign it to a selection of machines
• Show a spinner while checking a machine's power and then remove the spinner (and show possible error result)
• Add a model e.g. user and when the item is created then redirect to the list (at the moment we assume that only one action will change saving/saved).
• Submit a form and display errors (at the moment we assume any errors are for the form that was just submitted).