working on including wtforms support.  using a model converter inspired by flask-mongoengine to convert a schematics model in to a wtf.Form
improved mapping when choices is present
added form_name property to a field; the default value is populated with a titlized version of the field name; also added the property name to the base type which is a readonly property on field_name
fixed a problem converting EmailType
allowing a class of a model to be passed to model_form; if a class is passsed, it will be instantiated within the model_form routine