@WIP Adjusting how fieldsets are built

The tests are broken, but I'm working on that.
I believe the time has come to create the PresentedFieldset object.
@WIP Ongoing struggle with fieldsets
Converting Presented objects to SimpleDelegator

I want to make sure that regardless of the context, I am receiving
objects that I expected to be receiving.
Adjusting so we have PresentedFieldsets
Adding Fieldset rendering

Need to tease apart the rendering option for a presented entity, as
the renderer is really not something I'm concerned with, but instead
many of the contextual components are part of the presented entity.