Add advanced selector in views build mode selector

Committed to CVS. All logic per object is now moved to their modules. EG: nd.module now has a function called ds_views_row_node . The view plugin takes all base objects too, so anyone can create a function for it without having to implement a module for it.

The advanced selector is a simple checkbox which will route that function through ds_views_row_adv_VIEWNAME so anyone can either
a) override the default
b) create their own logic for other stuff too

There will be no UI for this ever since this is really project specific IMHO

Addendum: in the future, we might expose such advanced selector functions to the UI, but not for now.

Really is fixed