Extracting method for Base Presenter

I'm preparing to allow subdirectory lookup. This would mean instead
of having top-level view changes as per the current BasePresenter
I would allow: `app/views/hydramata/work/works/:work_type` behavior

It is also possible I would then have:

* `app/views/hydramata/works/fieldsets/:work_type/:fieldset`
* `app/views/hydramata/works/fieldsets/:fieldset`
* `app/views/hydramata/works/properties/:work_type/:fieldset/:property`
* `app/views/hydramata/works/properties/:work_type/:property`
* `app/views/hydramata/works/properties/:property`

This would require exception handling of template not found issues.