Allow a single view template to be shared between trackable types, instead of forcing a discrete set of views for each type. This is useful when displaying a simple feed with consistent formatting for all trackable resources.
Currently Public Activity forces a discrete set of views for every Trackable type. In my current project I am using Public Activity to display a simple feed in a CMS. There are 20 separate models, all of which are trackable, and the only thing I want to display is the time the resource was updated/created, a link to the resource, an icon for the resource type and a title. All these resources implement `to_title`, so I can use the exact same views for every resource. However Public Activity doesn't allow for this. My only option is to duplicate the exact same views for every resource type. Please implement some kind of fallback in how Public Activity looks for views. It could start by looking for Model-specific views, then fall back to generic views, much as Rails partials fall back to partials created for a parent controller.