For connected streams, a user should be able to delete the stream

[dtauerbach]

When a user wants to delete a stream, a modal should pop up requiring confirmation and warning users that this action is irreversible. I can create the language for the modal separately. Changes should be made to the database to support this functionality, but actual data doesn't need to be deleted yet; that can be integrated later. Just flip a switch to "deleted" in a given table or something.