Move form_class stuff out of core/models.py - make verdantadmin responsible for them instead
support defining / registering verdantadmin model forms to override the auto-created ones
wrap verdantadmin form classes in AdminHandler objects so that we can add extra functionality without digging into ModelForm metaclasses
refactor AdminHandler to be the thing that controls form processing
support inline formsets within verdantadmin edit forms
tweak AdminHandler so it's passed a model, but not necessarily a form
Only exclude internal fields from verdantadmin modelforms if we're descended from Page. Not great, but better than nothing
do AdminHandler config field population in a metaclass, rather than at instantiation time
introduce concept of admin panels, so that we can have inlines anywhere in the sequence
use a template to render field_panel
handle InlinePanel rendering with a template too
declaring panel.render output as safe should be the responsibility of the panel itself
derive a usable panel list from form fields if no 'panels' declaration is supplied for an AdminHandler
building the formset model should be the responsibility of InlinePanel, not the caller
per-panel javascript and expanding formsets