namespace external events for cos it's nice not to clobber the event space

Currently we events for the window object and the form that ST attaches too clobber any other user added events. Namespacing allows us finer control over the events that we set on those objects, allowing us to remove or amend those events without affecting other events set on the object. 

We should consider adding namespaces for all events but these are the main ones affecting objects external to ST for now.