Add method subclassing hints for legacy view
Add method subclassing hints for legacy view

These might be hard to identify if you don't already know you can hook
them.

pivotal-energy-solutions/django-datatable-view,doganmeh/django-datatable-view,pivotal-energy-solutions/django-datatable-view,doganmeh/django-datatable-view,pivotal-energy-solutions/django-datatable-view,doganmeh/django-datatable-view